85777131632 has 20 divisors (see below), whose sum is σ = 168673690056. Its totient is φ = 42248437440.

The previous prime is 85777131617. The next prime is 85777131641. The reversal of 85777131632 is 23613177758.

It is a super-2 number, since 2×85777131632² (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, 40006919 + ... + 40009062.

Almost surely, 2^85777131632 is an apocalyptic number.

It is an amenable number.

85777131632 is a deficient number, since it is larger than the sum of its proper divisors (82896558424).

85777131632 is a wasteful number, since it uses less digits than its factorization.

85777131632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80016056 (or 80016050 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 50.

The spelling of 85777131632 in words is "eighty-five billion, seven hundred seventy-seven million, one hundred thirty-one thousand, six hundred thirty-two".