29719117992 has 16 divisors (see below), whose sum is σ = 74297795040. Its totient is φ = 9906372656.

The previous prime is 29719117979. The next prime is 29719118057. The reversal of 29719117992 is 29971191792.

It is a super-2 number, since 2×29719117992² (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 3 ways as a sum of consecutive naturals, for example, 619148268 + ... + 619148315.

It is an arithmetic number, because the mean of its divisors is an integer number (4643612190).

Almost surely, 2^29719117992 is an apocalyptic number.

It is an amenable number.

29719117992 is an abundant number, since it is smaller than the sum of its proper divisors (44578677048).

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

29719117992 is a wasteful number, since it uses less digits than its factorization.

29719117992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238296592 (or 1238296588 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 57.

The spelling of 29719117992 in words is "twenty-nine billion, seven hundred nineteen million, one hundred seventeen thousand, nine hundred ninety-two".