99513645023 has 4 divisors (see below), whose sum is σ = 107168540808. Its totient is φ = 91858749240.

The previous prime is 99513645019. The next prime is 99513645043. The reversal of 99513645023 is 32054631599.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99513645023 - 2² = 99513645019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99513645043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3827447873 + ... + 3827447898.

It is an arithmetic number, because the mean of its divisors is an integer number (26792135202).

Almost surely, 2^99513645023 is an apocalyptic number.

99513645023 is a deficient number, since it is larger than the sum of its proper divisors (7654895785).

99513645023 is a wasteful number, since it uses less digits than its factorization.

99513645023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7654895784.

The product of its (nonzero) digits is 874800, while the sum is 47.

The spelling of 99513645023 in words is "ninety-nine billion, five hundred thirteen million, six hundred forty-five thousand, twenty-three".