75742556816 has 20 divisors (see below), whose sum is σ = 151811591100. Its totient is φ = 36565372032.

The previous prime is 75742556779. The next prime is 75742556837. The reversal of 75742556816 is 61865524757.

It can be written as a sum of positive squares in 2 ways, for example, as 38533690000 + 37208866816 = 196300^2 + 192896^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81618671 + ... + 81619598.

It is an arithmetic number, because the mean of its divisors is an integer number (7590579555).

Almost surely, 2^75742556816 is an apocalyptic number.

It is an amenable number.

75742556816 is an abundant number, since it is smaller than the sum of its proper divisors (76069034284).

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

75742556816 is a wasteful number, since it uses less digits than its factorization.

75742556816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163238306 (or 163238300 counting only the distinct ones).

The product of its digits is 14112000, while the sum is 56.

The spelling of 75742556816 in words is "seventy-five billion, seven hundred forty-two million, five hundred fifty-six thousand, eight hundred sixteen".