77538589532 has 12 divisors (see below), whose sum is σ = 135695848176. Its totient is φ = 38768347200.

The previous prime is 77538589493. The next prime is 77538589547. The reversal of 77538589532 is 23598583577.

It is a happy number.

It is a super-2 number, since 2×77538589532² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33344 + ... + 395207.

It is an arithmetic number, because the mean of its divisors is an integer number (11307987348).

Almost surely, 2^77538589532 is an apocalyptic number.

It is an amenable number.

77538589532 is a deficient number, since it is larger than the sum of its proper divisors (58157258644).

77538589532 is a wasteful number, since it uses less digits than its factorization.

77538589532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473788 (or 473786 counting only the distinct ones).

The product of its digits is 63504000, while the sum is 62.

The spelling of 77538589532 in words is "seventy-seven billion, five hundred thirty-eight million, five hundred eighty-nine thousand, five hundred thirty-two".