80155680 has 384 divisors, whose sum is σ = 313528320. Its totient is φ = 16957440.

The previous prime is 80155643. The next prime is 80155703. The reversal of 80155680 is 8655108.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1705417 + ... + 1705463.

It is an arithmetic number, because the mean of its divisors is an integer number (816480).

Almost surely, 2^80155680 is an apocalyptic number.

80155680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80155680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156764160).

80155680 is an abundant number, since it is smaller than the sum of its proper divisors (233372640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80155680 is a wasteful number, since it uses less digits than its factorization.

80155680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 80155680 is about 8952.9704567814. The cubic root of 80155680 is about 431.1662588923.

It can be divided in two parts, 8015 and 5680, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 80155680 in words is "eighty million, one hundred fifty-five thousand, six hundred eighty".