7661402752 has 32 divisors (see below), whose sum is σ = 15347322900. Its totient is φ = 3809525760.

The previous prime is 7661402687. The next prime is 7661402759. The reversal of 7661402752 is 2572041667.

It can be written as a sum of positive squares in 2 ways, for example, as 7649951296 + 11451456 = 87464^2 + 3384^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (7661402759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142177 + ... + 188512.

Almost surely, 2^7661402752 is an apocalyptic number.

It is an amenable number.

7661402752 is an abundant number, since it is smaller than the sum of its proper divisors (7685920148).

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

7661402752 is a wasteful number, since it uses less digits than its factorization.

7661402752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330884 (or 330872 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 7661402752 is about 87529.4393447142. The cubic root of 7661402752 is about 1971.3758459849.

The spelling of 7661402752 in words is "seven billion, six hundred sixty-one million, four hundred two thousand, seven hundred fifty-two".