64656477364066 has 64 divisors (see below), whose sum is σ = 116205375928320. Its totient is φ = 26379955514880.

The previous prime is 64656477364049. The next prime is 64656477364069. The reversal of 64656477364066 is 66046377465646.

It is a junction number, because it is equal to n+sod(n) for n = 64656477363986 and 64656477364004.

It is not an unprimeable number, because it can be changed into a prime (64656477364069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231495321 + ... + 231774451.

It is an arithmetic number, because the mean of its divisors is an integer number (1815708998880).

Almost surely, 2^{64656477364066} is an apocalyptic number.

64656477364066 is a deficient number, since it is larger than the sum of its proper divisors (51548898564254).

64656477364066 is a wasteful number, since it uses less digits than its factorization.

64656477364066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282559.

The product of its (nonzero) digits is 2194698240, while the sum is 70.

The spelling of 64656477364066 in words is "sixty-four trillion, six hundred fifty-six billion, four hundred seventy-seven million, three hundred sixty-four thousand, sixty-six".