77903715747 has 48 divisors (see below), whose sum is σ = 125419214592. Its totient is φ = 42404273280.

The previous prime is 77903715739. The next prime is 77903715751. The reversal of 77903715747 is 74751730977.

It is not a de Polignac number, because 77903715747 - 2³ = 77903715739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77903715247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 520978 + ... + 653624.

It is an arithmetic number, because the mean of its divisors is an integer number (2612900304).

Almost surely, 2^77903715747 is an apocalyptic number.

77903715747 is a deficient number, since it is larger than the sum of its proper divisors (47515498845).

77903715747 is a wasteful number, since it uses less digits than its factorization.

77903715747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132748 (or 132711 counting only the distinct ones).

The product of its (nonzero) digits is 9075780, while the sum is 57.

The spelling of 77903715747 in words is "seventy-seven billion, nine hundred three million, seven hundred fifteen thousand, seven hundred forty-seven".