64260220668164 has 12 divisors (see below), whose sum is σ = 112462830200784. Its totient is φ = 32127983467944.

The previous prime is 64260220668139. The next prime is 64260220668191. The reversal of 64260220668164 is 46186602206246.

It is a super-2 number, since 2×64260220668164² (a number of 28 digits) contains 22 as substring.

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, 531648554 + ... + 531769409.

It is an arithmetic number, because the mean of its divisors is an integer number (9371902516732).

Almost surely, 2^{64260220668164} is an apocalyptic number.

It is an amenable number.

64260220668164 is a deficient number, since it is larger than the sum of its proper divisors (48202609532620).

64260220668164 is a wasteful number, since it uses less digits than its factorization.

64260220668164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063433074 (or 1063433072 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 53.

The spelling of 64260220668164 in words is "sixty-four trillion, two hundred sixty billion, two hundred twenty million, six hundred sixty-eight thousand, one hundred sixty-four".