77026560540 has 24 divisors (see below), whose sum is σ = 215674369680. Its totient is φ = 20540416128.

The previous prime is 77026560517. The next prime is 77026560563. The reversal of 77026560540 is 4506562077.

It is an interprime number because it is at equal distance from previous prime (77026560517) and next prime (77026560563).

It is a junction number, because it is equal to n+sod(n) for n = 77026560492 and 77026560501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641887945 + ... + 641888064.

It is an arithmetic number, because the mean of its divisors is an integer number (8986432070).

Almost surely, 2^77026560540 is an apocalyptic number.

It is an amenable number.

77026560540 is an abundant number, since it is smaller than the sum of its proper divisors (138647809140).

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

77026560540 is a wasteful number, since it uses less digits than its factorization.

77026560540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283776021 (or 1283776019 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 77026560540 in words is "seventy-seven billion, twenty-six million, five hundred sixty thousand, five hundred forty".