64964325919660 has 12 divisors (see below), whose sum is σ = 136425084431328. Its totient is φ = 25985730367856.

The previous prime is 64964325919613. The next prime is 64964325919711. The reversal of 64964325919660 is 6691952346946.

It is a self number, because there is not a number n which added to its sum of digits gives 64964325919660.

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, 1624108147972 + ... + 1624108148011.

It is an arithmetic number, because the mean of its divisors is an integer number (11368757035944).

Almost surely, 2^{64964325919660} is an apocalyptic number.

It is an amenable number.

64964325919660 is an abundant number, since it is smaller than the sum of its proper divisors (71460758511668).

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

64964325919660 is a wasteful number, since it uses less digits than its factorization.

64964325919660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248216295992 (or 3248216295990 counting only the distinct ones).

The product of its (nonzero) digits is 453496320, while the sum is 70.

The spelling of 64964325919660 in words is "sixty-four trillion, nine hundred sixty-four billion, three hundred twenty-five million, nine hundred nineteen thousand, six hundred sixty".