640604101036 has 6 divisors (see below), whose sum is σ = 1121057176820. Its totient is φ = 320302050516.

The previous prime is 640604101001. The next prime is 640604101073. The reversal of 640604101036 is 630101406046.

It is a super-2 number, since 2×640604101036² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 640604100989 and 640604101007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80075512626 + ... + 80075512633.

Almost surely, 2^640604101036 is an apocalyptic number.

It is an amenable number.

640604101036 is a deficient number, since it is larger than the sum of its proper divisors (480453075784).

640604101036 is a wasteful number, since it uses less digits than its factorization.

640604101036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160151025263 (or 160151025261 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 640604101036 in words is "six hundred forty billion, six hundred four million, one hundred one thousand, thirty-six".