99369642251 has 32 divisors (see below), whose sum is σ = 112159627776. Its totient is φ = 87253920000.

The previous prime is 99369642217. The next prime is 99369642277. The reversal of 99369642251 is 15224696399.

It is a cyclic number.

It is not a de Polignac number, because 99369642251 - 2²² = 99365447947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99369042251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21585716 + ... + 21590318.

It is an arithmetic number, because the mean of its divisors is an integer number (3504988368).

Almost surely, 2^99369642251 is an apocalyptic number.

99369642251 is a deficient number, since it is larger than the sum of its proper divisors (12789985525).

99369642251 is a wasteful number, since it uses less digits than its factorization.

99369642251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5123.

The product of its digits is 6298560, while the sum is 56.

The spelling of 99369642251 in words is "ninety-nine billion, three hundred sixty-nine million, six hundred forty-two thousand, two hundred fifty-one".