99028560631 has 32 divisors (see below), whose sum is σ = 133757826048. Its totient is φ = 70802691840.

The previous prime is 99028560619. The next prime is 99028560643. The reversal of 99028560631 is 13606582099.

It is an interprime number because it is at equal distance from previous prime (99028560619) and next prime (99028560643).

It is a cyclic number.

It is not a de Polignac number, because 99028560631 - 2⁹ = 99028560119 is a prime.

It is a super-2 number, since 2×99028560631² (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 (99028560031) 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, 129030 + ... + 463363.

It is an arithmetic number, because the mean of its divisors is an integer number (4179932064).

Almost surely, 2^99028560631 is an apocalyptic number.

99028560631 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

99028560631 is a deficient number, since it is larger than the sum of its proper divisors (34729265417).

99028560631 is a wasteful number, since it uses less digits than its factorization.

99028560631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592591.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 99028560631 in words is "ninety-nine billion, twenty-eight million, five hundred sixty thousand, six hundred thirty-one".