29911801902 has 16 divisors (see below), whose sum is σ = 59852266320. Its totient is φ = 9965823552.

The previous prime is 29911801891. The next prime is 29911801919. The reversal of 29911801902 is 20910811992.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1180693 + ... + 1205760.

It is an arithmetic number, because the mean of its divisors is an integer number (3740766645).

Almost surely, 2^29911801902 is an apocalyptic number.

29911801902 is an abundant number, since it is smaller than the sum of its proper divisors (29940464418).

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

29911801902 is a wasteful number, since it uses less digits than its factorization.

29911801902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388547.

The product of its (nonzero) digits is 23328, while the sum is 42.

The spelling of 29911801902 in words is "twenty-nine billion, nine hundred eleven million, eight hundred one thousand, nine hundred two".