29957821112 has 8 divisors (see below), whose sum is σ = 56170914600. Its totient is φ = 14978910552.

The previous prime is 29957821109. The next prime is 29957821129. The reversal of 29957821112 is 21112875992.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1872363812 + ... + 1872363827.

It is an arithmetic number, because the mean of its divisors is an integer number (7021364325).

Almost surely, 2^29957821112 is an apocalyptic number.

It is an amenable number.

29957821112 is a deficient number, since it is larger than the sum of its proper divisors (26213093488).

29957821112 is a wasteful number, since it uses less digits than its factorization.

29957821112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3744727645 (or 3744727641 counting only the distinct ones).

The product of its digits is 181440, while the sum is 47.

The spelling of 29957821112 in words is "twenty-nine billion, nine hundred fifty-seven million, eight hundred twenty-one thousand, one hundred twelve".