77885453464 has 64 divisors (see below), whose sum is σ = 182010931200. Its totient is φ = 30421782144.

The previous prime is 77885453447. The next prime is 77885453507. The reversal of 77885453464 is 46435458877.

It is a super-2 number, since 2×77885453464² (a number of 23 digits) contains 22 as substring.

It is a congruent 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, 619612 + ... + 734635.

It is an arithmetic number, because the mean of its divisors is an integer number (2843920800).

Almost surely, 2^77885453464 is an apocalyptic number.

It is an amenable number.

77885453464 is an abundant number, since it is smaller than the sum of its proper divisors (104125477736).

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

77885453464 is a wasteful number, since it uses less digits than its factorization.

77885453464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354352 (or 1354348 counting only the distinct ones).

The product of its digits is 90316800, while the sum is 61.

The spelling of 77885453464 in words is "seventy-seven billion, eight hundred eighty-five million, four hundred fifty-three thousand, four hundred sixty-four".