29977172112 has 40 divisors (see below), whose sum is σ = 79939129600. Its totient is φ = 9670055040.

The previous prime is 29977172083. The next prime is 29977172149. The reversal of 29977172112 is 21127177992.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10071487 + ... + 10074462.

It is an arithmetic number, because the mean of its divisors is an integer number (1998478240).

Almost surely, 2^29977172112 is an apocalyptic number.

It is an amenable number.

29977172112 is an abundant number, since it is smaller than the sum of its proper divisors (49961957488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29977172112 is a wasteful number, since it uses less digits than its factorization.

29977172112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20145991 (or 20145985 counting only the distinct ones).

The product of its digits is 222264, while the sum is 48.

The spelling of 29977172112 in words is "twenty-nine billion, nine hundred seventy-seven million, one hundred seventy-two thousand, one hundred twelve".