99942384678131 has 16 divisors (see below), whose sum is σ = 102538256879520. Its totient is φ = 97354085556480.

The previous prime is 99942384678079. The next prime is 99942384678151. The reversal of 99942384678131 is 13187648324999.

It is a cyclic number.

It is not a de Polignac number, because 99942384678131 - 2²⁶ = 99942317569267 is a prime.

It is a super-2 number, since 2×99942384678131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99942384678151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218457581 + ... + 218914593.

It is an arithmetic number, because the mean of its divisors is an integer number (6408641054970).

Almost surely, 2^{99942384678131} is an apocalyptic number.

99942384678131 is a deficient number, since it is larger than the sum of its proper divisors (2595872201389).

99942384678131 is a wasteful number, since it uses less digits than its factorization.

99942384678131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465286.

The product of its digits is 564350976, while the sum is 74.

The spelling of 99942384678131 in words is "ninety-nine trillion, nine hundred forty-two billion, three hundred eighty-four million, six hundred seventy-eight thousand, one hundred thirty-one".