99690732427 has 32 divisors (see below), whose sum is σ = 128284793280. Its totient is φ = 76020510720.

The previous prime is 99690732413. The next prime is 99690732443. The reversal of 99690732427 is 72423709699.

It is not a de Polignac number, because 99690732427 - 2⁷ = 99690732299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99690732227) 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, 636538 + ... + 777535.

It is an arithmetic number, because the mean of its divisors is an integer number (4008899790).

Almost surely, 2^99690732427 is an apocalyptic number.

99690732427 is a deficient number, since it is larger than the sum of its proper divisors (28594060853).

99690732427 is a wasteful number, since it uses less digits than its factorization.

99690732427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414143.

The product of its (nonzero) digits is 10287648, while the sum is 58.

The spelling of 99690732427 in words is "ninety-nine billion, six hundred ninety million, seven hundred thirty-two thousand, four hundred twenty-seven".