29976955491 has 32 divisors (see below), whose sum is σ = 48443194368. Its totient is φ = 16096389120.

The previous prime is 29976955487. The next prime is 29976955513. The reversal of 29976955491 is 19455967992.

It is not a de Polignac number, because 29976955491 - 2² = 29976955487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29976955691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158731 + ... + 291803.

It is an arithmetic number, because the mean of its divisors is an integer number (1513849824).

Almost surely, 2^29976955491 is an apocalyptic number.

29976955491 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

29976955491 is a deficient number, since it is larger than the sum of its proper divisors (18466238877).

29976955491 is a wasteful number, since it uses less digits than its factorization.

29976955491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133731.

The product of its digits is 55112400, while the sum is 66.

The spelling of 29976955491 in words is "twenty-nine billion, nine hundred seventy-six million, nine hundred fifty-five thousand, four hundred ninety-one".