64143731637 has 12 divisors (see below), whose sum is σ = 92716106080. Its totient is φ = 42732926568.

The previous prime is 64143731629. The next prime is 64143731669. The reversal of 64143731637 is 73613734146.

64143731637 is a `hidden beast` number, since 6 + 4 + 1 + 4 + 3 + 7 + 3 + 1 + 637 = 666.

It is not a de Polignac number, because 64143731637 - 2³ = 64143731629 is a prime.

It is a super-2 number, since 2×64143731637² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64143731592 and 64143731601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64143731137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2449687 + ... + 2475732.

Almost surely, 2^64143731637 is an apocalyptic number.

It is an amenable number.

64143731637 is a deficient number, since it is larger than the sum of its proper divisors (28572374443).

64143731637 is a wasteful number, since it uses less digits than its factorization.

64143731637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4926872 (or 4926869 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The spelling of 64143731637 in words is "sixty-four billion, one hundred forty-three million, seven hundred thirty-one thousand, six hundred thirty-seven".