29427857636 has 12 divisors (see below), whose sum is σ = 51760167228. Its totient is φ = 14639238432.

The previous prime is 29427857629. The next prime is 29427857639. The reversal of 29427857636 is 63675872492.

It can be written as a sum of positive squares in 2 ways, for example, as 29260155136 + 167702500 = 171056^2 + 12950^2 .

It is not an unprimeable number, because it can be changed into a prime (29427857639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18671711 + ... + 18673286.

It is an arithmetic number, because the mean of its divisors is an integer number (4313347269).

Almost surely, 2^29427857636 is an apocalyptic number.

It is an amenable number.

29427857636 is a deficient number, since it is larger than the sum of its proper divisors (22332309592).

29427857636 is a wasteful number, since it uses less digits than its factorization.

29427857636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37345198 (or 37345196 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 59.

The spelling of 29427857636 in words is "twenty-nine billion, four hundred twenty-seven million, eight hundred fifty-seven thousand, six hundred thirty-six".