29971227164 has 24 divisors (see below), whose sum is σ = 52974125568. Its totient is φ = 14835846960.

The previous prime is 29971227163. The next prime is 29971227193. The reversal of 29971227164 is 46172217992.

It is a happy number.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29971227161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1800809 + ... + 1817375.

It is an arithmetic number, because the mean of its divisors is an integer number (2207255232).

Almost surely, 2^29971227164 is an apocalyptic number.

It is an amenable number.

29971227164 is a deficient number, since it is larger than the sum of its proper divisors (23002898404).

29971227164 is a wasteful number, since it uses less digits than its factorization.

29971227164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21065 (or 21063 counting only the distinct ones).

The product of its digits is 762048, while the sum is 50.

The spelling of 29971227164 in words is "twenty-nine billion, nine hundred seventy-one million, two hundred twenty-seven thousand, one hundred sixty-four".