77399549466460 has 48 divisors (see below), whose sum is σ = 175050203471136. Its totient is φ = 28576965318912.

The previous prime is 77399549466383. The next prime is 77399549466469. The reversal of 77399549466460 is 6466494599377.

It is a super-2 number, since 2×77399549466460² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77399549466469) 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, 1319659 + ... + 12511618.

It is an arithmetic number, because the mean of its divisors is an integer number (3646879238982).

Almost surely, 2^{77399549466460} is an apocalyptic number.

It is an amenable number.

77399549466460 is an abundant number, since it is smaller than the sum of its proper divisors (97650654004676).

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

77399549466460 is a wasteful number, since it uses less digits than its factorization.

77399549466460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13852822 (or 13852820 counting only the distinct ones).

The product of its (nonzero) digits is 7407106560, while the sum is 79.

The spelling of 77399549466460 in words is "seventy-seven trillion, three hundred ninety-nine billion, five hundred forty-nine million, four hundred sixty-six thousand, four hundred sixty".