29977897152 has 56 divisors (see below), whose sum is σ = 90647454976. Its totient is φ = 8565113088.

The previous prime is 29977897133. The next prime is 29977897177. The reversal of 29977897152 is 25179877992.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×29977897152² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11151148 + ... + 11153835.

Almost surely, 2^29977897152 is an apocalyptic number.

It is an amenable number.

29977897152 is an abundant number, since it is smaller than the sum of its proper divisors (60669557824).

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

29977897152 is a wasteful number, since it uses less digits than its factorization.

29977897152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22305005 (or 22304995 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 66.

The spelling of 29977897152 in words is "twenty-nine billion, nine hundred seventy-seven million, eight hundred ninety-seven thousand, one hundred fifty-two".