99374537121 has 32 divisors (see below), whose sum is σ = 136504811520. Its totient is φ = 64269362304.

The previous prime is 99374537083. The next prime is 99374537147. The reversal of 99374537121 is 12173547399.

It is not a de Polignac number, because 99374537121 - 2⁷ = 99374536993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99374537321) 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, 13142740 + ... + 13150298.

It is an arithmetic number, because the mean of its divisors is an integer number (4265775360).

Almost surely, 2^99374537121 is an apocalyptic number.

It is an amenable number.

99374537121 is a deficient number, since it is larger than the sum of its proper divisors (37130274399).

99374537121 is a wasteful number, since it uses less digits than its factorization.

99374537121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8285.

The product of its digits is 1428840, while the sum is 51.

The spelling of 99374537121 in words is "ninety-nine billion, three hundred seventy-four million, five hundred thirty-seven thousand, one hundred twenty-one".