64205662131 has 48 divisors (see below), whose sum is σ = 100388972320. Its totient is φ = 39308613120.

The previous prime is 64205662127. The next prime is 64205662133. The reversal of 64205662131 is 13126650246.

64205662131 is a `hidden beast` number, since 6 + 4 + 20 + 5 + 6 + 621 + 3 + 1 = 666.

It is not a de Polignac number, because 64205662131 - 2² = 64205662127 is a prime.

It is a super-2 number, since 2×64205662131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64205662133) 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 47 ways as a sum of consecutive naturals, for example, 20144520 + ... + 20147706.

Almost surely, 2^64205662131 is an apocalyptic number.

64205662131 is a deficient number, since it is larger than the sum of its proper divisors (36183310189).

64205662131 is a wasteful number, since it uses less digits than its factorization.

64205662131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036 (or 4033 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 64205662131 in words is "sixty-four billion, two hundred five million, six hundred sixty-two thousand, one hundred thirty-one".