77528077690 has 32 divisors (see below), whose sum is σ = 159642990720. Its totient is φ = 26554945344.

The previous prime is 77528077667. The next prime is 77528077709. The reversal of 77528077690 is 9677082577.

It is a super-2 number, since 2×77528077690² (a number of 23 digits) contains 22 as substring.

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, 472117 + ... + 614776.

It is an arithmetic number, because the mean of its divisors is an integer number (4988843460).

Almost surely, 2^77528077690 is an apocalyptic number.

77528077690 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

77528077690 is an abundant number, since it is smaller than the sum of its proper divisors (82114913030).

77528077690 is a wasteful number, since it uses less digits than its factorization.

77528077690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087926.

The product of its (nonzero) digits is 10372320, while the sum is 58.

The spelling of 77528077690 in words is "seventy-seven billion, five hundred twenty-eight million, seventy-seven thousand, six hundred ninety".