80126866 has 4 divisors (see below), whose sum is σ = 120190302. Its totient is φ = 40063432.

The previous prime is 80126807. The next prime is 80126873. The reversal of 80126866 is 66862108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77951241 + 2175625 = 8829^2 + 1475^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20031715 + ... + 20031718.

Almost surely, 2^80126866 is an apocalyptic number.

80126866 is a deficient number, since it is larger than the sum of its proper divisors (40063436).

80126866 is a wasteful number, since it uses less digits than its factorization.

80126866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40063435.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 80126866 is about 8951.3611255496. The cubic root of 80126866 is about 431.1145881371.

It can be divided in two parts, 8012 and 6866, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 80126866 in words is "eighty million, one hundred twenty-six thousand, eight hundred sixty-six".