29972447836 has 48 divisors (see below), whose sum is σ = 56052944640. Its totient is φ = 13992168960.

The previous prime is 29972447831. The next prime is 29972447887. The reversal of 29972447836 is 63874427992.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29972447831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6876970 + ... + 6881326.

It is an arithmetic number, because the mean of its divisors is an integer number (1167769680).

Almost surely, 2^29972447836 is an apocalyptic number.

It is an amenable number.

29972447836 is a deficient number, since it is larger than the sum of its proper divisors (26080496804).

29972447836 is a wasteful number, since it uses less digits than its factorization.

29972447836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6334 (or 6332 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 61.

The spelling of 29972447836 in words is "twenty-nine billion, nine hundred seventy-two million, four hundred forty-seven thousand, eight hundred thirty-six".