97920129111 has 32 divisors (see below), whose sum is σ = 150210920448. Its totient is φ = 55580217600.

The previous prime is 97920129107. The next prime is 97920129161. The reversal of 97920129111 is 11192102979.

It is not a de Polignac number, because 97920129111 - 2² = 97920129107 is a prime.

It is a super-2 number, since 2×97920129111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97920129161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4169875 + ... + 4193291.

It is an arithmetic number, because the mean of its divisors is an integer number (4694091264).

Almost surely, 2^97920129111 is an apocalyptic number.

97920129111 is a deficient number, since it is larger than the sum of its proper divisors (52290791337).

97920129111 is a wasteful number, since it uses less digits than its factorization.

97920129111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24751.

The product of its (nonzero) digits is 20412, while the sum is 42.

The spelling of 97920129111 in words is "ninety-seven billion, nine hundred twenty million, one hundred twenty-nine thousand, one hundred eleven".