29664421831 has 12 divisors (see below), whose sum is σ = 32905503400. Its totient is φ = 26720234640.

The previous prime is 29664421811. The next prime is 29664421841. The reversal of 29664421831 is 13812446692.

It is not a de Polignac number, because 29664421831 - 2¹⁵ = 29664389063 is a prime.

It is a super-2 number, since 2×29664421831² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29664421811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1111401 + ... + 1137778.

Almost surely, 2^29664421831 is an apocalyptic number.

29664421831 is a deficient number, since it is larger than the sum of its proper divisors (3241081569).

29664421831 is a wasteful number, since it uses less digits than its factorization.

29664421831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249310 (or 2249299 counting only the distinct ones).

The product of its digits is 497664, while the sum is 46.

The spelling of 29664421831 in words is "twenty-nine billion, six hundred sixty-four million, four hundred twenty-one thousand, eight hundred thirty-one".