64147370964 has 12 divisors (see below), whose sum is σ = 149677198944. Its totient is φ = 21382456984.

The previous prime is 64147370951. The next prime is 64147370993. The reversal of 64147370964 is 46907374146.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×64147370964² (a number of 22 digits) contains 22 as substring.

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, 2672807112 + ... + 2672807135.

It is an arithmetic number, because the mean of its divisors is an integer number (12473099912).

Almost surely, 2^64147370964 is an apocalyptic number.

It is an amenable number.

64147370964 is an abundant number, since it is smaller than the sum of its proper divisors (85529827980).

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

64147370964 is a wasteful number, since it uses less digits than its factorization.

64147370964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5345614254 (or 5345614252 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 51.

The spelling of 64147370964 in words is "sixty-four billion, one hundred forty-seven million, three hundred seventy thousand, nine hundred sixty-four".