64136550566626 has 16 divisors (see below), whose sum is σ = 96619770190944. Its totient is φ = 31929966338464.

The previous prime is 64136550566611. The next prime is 64136550566629. The reversal of 64136550566626 is 62666505563146.

It is a super-2 number, since 2×64136550566626² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64136550566629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20915985 + ... + 23785531.

It is an arithmetic number, because the mean of its divisors is an integer number (6038735636934).

Almost surely, 2^{64136550566626} is an apocalyptic number.

64136550566626 is a deficient number, since it is larger than the sum of its proper divisors (32483219624318).

64136550566626 is a wasteful number, since it uses less digits than its factorization.

64136550566626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917745.

The product of its (nonzero) digits is 139968000, while the sum is 61.

The spelling of 64136550566626 in words is "sixty-four trillion, one hundred thirty-six billion, five hundred fifty million, five hundred sixty-six thousand, six hundred twenty-six".