64130312172 has 48 divisors (see below), whose sum is σ = 157566416000. Its totient is φ = 20244816000.

The previous prime is 64130312167. The next prime is 64130312209. The reversal of 64130312172 is 27121303146.

It is a happy number.

It is a super-2 number, since 2×64130312172² (a number of 22 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, 649047 + ... + 741297.

Almost surely, 2^64130312172 is an apocalyptic number.

It is an amenable number.

64130312172 is an abundant number, since it is smaller than the sum of its proper divisors (93436103828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64130312172 is a wasteful number, since it uses less digits than its factorization.

64130312172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95326 (or 95324 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The spelling of 64130312172 in words is "sixty-four billion, one hundred thirty million, three hundred twelve thousand, one hundred seventy-two".