64983171028 has 12 divisors (see below), whose sum is σ = 113732176320. Its totient is φ = 32488263512.

The previous prime is 64983171017. The next prime is 64983171037. The reversal of 64983171028 is 82017138946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786226 + ... + 864937.

It is an arithmetic number, because the mean of its divisors is an integer number (9477681360).

Almost surely, 2^64983171028 is an apocalyptic number.

It is an amenable number.

64983171028 is a deficient number, since it is larger than the sum of its proper divisors (48749005292).

64983171028 is a wasteful number, since it uses less digits than its factorization.

64983171028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661006 (or 1661004 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 64983171028 in words is "sixty-four billion, nine hundred eighty-three million, one hundred seventy-one thousand, twenty-eight".