99431433501 has 16 divisors (see below), whose sum is σ = 140380948224. Its totient is φ = 62385168384.

The previous prime is 99431433473. The next prime is 99431433527. The reversal of 99431433501 is 10533413499.

It is not a de Polignac number, because 99431433501 - 2²³ = 99423044893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99431433601) 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, 1333725 + ... + 1406301.

It is an arithmetic number, because the mean of its divisors is an integer number (8773809264).

Almost surely, 2^99431433501 is an apocalyptic number.

It is an amenable number.

99431433501 is a deficient number, since it is larger than the sum of its proper divisors (40949514723).

99431433501 is a wasteful number, since it uses less digits than its factorization.

99431433501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99460.

The product of its (nonzero) digits is 174960, while the sum is 42.

The spelling of 99431433501 in words is "ninety-nine billion, four hundred thirty-one million, four hundred thirty-three thousand, five hundred one".