66437641627245 has 48 divisors (see below), whose sum is σ = 132646102118400. Its totient is φ = 30132347680512.

The previous prime is 66437641627039. The next prime is 66437641627349. The reversal of 66437641627245 is 54272614673466.

66437641627245 is a `hidden beast` number, since 6 + 6 + 4 + 376 + 4 + 16 + 2 + 7 + 245 = 666.

It is not a de Polignac number, because 66437641627245 - 2⁸ = 66437641626989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 830326720 + ... + 830406729.

It is an arithmetic number, because the mean of its divisors is an integer number (2763460460800).

Almost surely, 2^{66437641627245} is an apocalyptic number.

It is an amenable number.

66437641627245 is a deficient number, since it is larger than the sum of its proper divisors (66208460491155).

66437641627245 is a wasteful number, since it uses less digits than its factorization.

66437641627245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660733594 (or 1660733591 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 63.

The spelling of 66437641627245 in words is "sixty-six trillion, four hundred thirty-seven billion, six hundred forty-one million, six hundred twenty-seven thousand, two hundred forty-five".