99831939495 has 64 divisors (see below), whose sum is σ = 175940505600. Its totient is φ = 48145259520.

The previous prime is 99831939491. The next prime is 99831939497. The reversal of 99831939495 is 59493913899.

It is not a de Polignac number, because 99831939495 - 2² = 99831939491 is a prime.

It is a super-2 number, since 2×99831939495² (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 (99831939491) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 567561 + ... + 722349.

It is an arithmetic number, because the mean of its divisors is an integer number (2749070400).

Almost surely, 2^99831939495 is an apocalyptic number.

99831939495 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

99831939495 is the 257982-nd pentagonal number.

99831939495 is a deficient number, since it is larger than the sum of its proper divisors (76108566105).

99831939495 is a wasteful number, since it uses less digits than its factorization.

99831939495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154920.

The product of its digits is 85030560, while the sum is 69.

The spelling of 99831939495 in words is "ninety-nine billion, eight hundred thirty-one million, nine hundred thirty-nine thousand, four hundred ninety-five".