29947257612 has 18 divisors (see below), whose sum is σ = 75700012388. Its totient is φ = 9982419192.

The previous prime is 29947257563. The next prime is 29947257629. The reversal of 29947257612 is 21675274992.

29947257612 is a `hidden beast` number, since 2 + 99 + 472 + 5 + 76 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 415934098 + ... + 415934169.

Almost surely, 2^29947257612 is an apocalyptic number.

It is an amenable number.

29947257612 is an abundant number, since it is smaller than the sum of its proper divisors (45752754776).

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

29947257612 is a wasteful number, since it uses less digits than its factorization.

29947257612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831868277 (or 831868272 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The spelling of 29947257612 in words is "twenty-nine billion, nine hundred forty-seven million, two hundred fifty-seven thousand, six hundred twelve".