77137402265256 has 64 divisors (see below), whose sum is σ = 194216729400000. Its totient is φ = 25529511320576.

The previous prime is 77137402265251. The next prime is 77137402265263. The reversal of 77137402265256 is 65256220473177.

It is a junction number, because it is equal to n+sod(n) for n = 77137402265196 and 77137402265205.

It is not an unprimeable number, because it can be changed into a prime (77137402265251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4407280 + ... + 13179488.

It is an arithmetic number, because the mean of its divisors is an integer number (3034636396875).

Almost surely, 2^{77137402265256} is an apocalyptic number.

It is an amenable number.

77137402265256 is an abundant number, since it is smaller than the sum of its proper divisors (117079327134744).

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

77137402265256 is a wasteful number, since it uses less digits than its factorization.

77137402265256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8774826 (or 8774822 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 57.

The spelling of 77137402265256 in words is "seventy-seven trillion, one hundred thirty-seven billion, four hundred two million, two hundred sixty-five thousand, two hundred fifty-six".