77925903528 has 64 divisors (see below), whose sum is σ = 212624294400. Its totient is φ = 23602898880.

The previous prime is 77925903449. The next prime is 77925903547. The reversal of 77925903528 is 82530952977.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507525 + ... + 642987.

It is an arithmetic number, because the mean of its divisors is an integer number (3322254600).

Almost surely, 2^77925903528 is an apocalyptic number.

It is an amenable number.

77925903528 is an abundant number, since it is smaller than the sum of its proper divisors (134698390872).

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

77925903528 is a wasteful number, since it uses less digits than its factorization.

77925903528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137662 (or 137658 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 57.

The spelling of 77925903528 in words is "seventy-seven billion, nine hundred twenty-five million, nine hundred three thousand, five hundred twenty-eight".