66136626432345 has 64 divisors (see below), whose sum is σ = 121492254228480. Its totient is φ = 30094761731328.

The previous prime is 66136626432341. The next prime is 66136626432377. The reversal of 66136626432345 is 54323462663166.

It is not a de Polignac number, because 66136626432345 - 2² = 66136626432341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66136626432341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 121740339 + ... + 122282391.

It is an arithmetic number, because the mean of its divisors is an integer number (1898316472320).

Almost surely, 2^{66136626432345} is an apocalyptic number.

It is an amenable number.

66136626432345 is a deficient number, since it is larger than the sum of its proper divisors (55355627796135).

66136626432345 is a wasteful number, since it uses less digits than its factorization.

66136626432345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547414.

The product of its digits is 67184640, while the sum is 57.

The spelling of 66136626432345 in words is "sixty-six trillion, one hundred thirty-six billion, six hundred twenty-six million, four hundred thirty-two thousand, three hundred forty-five".