29983992968 has 16 divisors (see below), whose sum is σ = 58158607500. Its totient is φ = 14475030976.

The previous prime is 29983992937. The next prime is 29983993027. The reversal of 29983992968 is 86929938992.

It can be written as a sum of positive squares in 2 ways, for example, as 25992533284 + 3991459684 = 161222^2 + 63178^2 .

It is a junction number, because it is equal to n+sod(n) for n = 29983992895 and 29983992904.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64620443 + ... + 64620906.

Almost surely, 2^29983992968 is an apocalyptic number.

It is an amenable number.

29983992968 is a deficient number, since it is larger than the sum of its proper divisors (28174614532).

29983992968 is a wasteful number, since it uses less digits than its factorization.

29983992968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129241384 (or 129241380 counting only the distinct ones).

The product of its digits is 272097792, while the sum is 74.

The spelling of 29983992968 in words is "twenty-nine billion, nine hundred eighty-three million, nine hundred ninety-two thousand, nine hundred sixty-eight".