99840763631 has 16 divisors (see below), whose sum is σ = 115367970816. Its totient is φ = 84630963456.

The previous prime is 99840763619. The next prime is 99840763651. The reversal of 99840763631 is 13636704899.

It is a cyclic number.

It is not a de Polignac number, because 99840763631 - 2¹⁴ = 99840747247 is a prime.

It is a super-2 number, since 2×99840763631² (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 (99840763651) 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, 845630 + ... + 956436.

It is an arithmetic number, because the mean of its divisors is an integer number (7210498176).

Almost surely, 2^99840763631 is an apocalyptic number.

99840763631 is a deficient number, since it is larger than the sum of its proper divisors (15527207185).

99840763631 is a wasteful number, since it uses less digits than its factorization.

99840763631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112238.

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 99840763631 in words is "ninety-nine billion, eight hundred forty million, seven hundred sixty-three thousand, six hundred thirty-one".