64975056996 has 48 divisors (see below), whose sum is σ = 154954473408. Its totient is φ = 21185520000.

The previous prime is 64975056983. The next prime is 64975057013. The reversal of 64975056996 is 69965057946.

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, 222355 + ... + 423546.

It is an arithmetic number, because the mean of its divisors is an integer number (3228218196).

Almost surely, 2^64975056996 is an apocalyptic number.

It is an amenable number.

64975056996 is an abundant number, since it is smaller than the sum of its proper divisors (89979416412).

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

64975056996 is a wasteful number, since it uses less digits than its factorization.

64975056996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646092 (or 646090 counting only the distinct ones).

The product of its (nonzero) digits is 110224800, while the sum is 66.

The spelling of 64975056996 in words is "sixty-four billion, nine hundred seventy-five million, fifty-six thousand, nine hundred ninety-six".