99128968593 has 16 divisors (see below), whose sum is σ = 135567047616. Its totient is φ = 64395737280.

The previous prime is 99128968573. The next prime is 99128968619. The reversal of 99128968593 is 39586982199.

It is not a de Polignac number, because 99128968593 - 2¹⁸ = 99128706449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99128968573) 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, 858330 + ... + 966947.

It is an arithmetic number, because the mean of its divisors is an integer number (8472940476).

Almost surely, 2^99128968593 is an apocalyptic number.

It is an amenable number.

99128968593 is a deficient number, since it is larger than the sum of its proper divisors (36438079023).

99128968593 is a wasteful number, since it uses less digits than its factorization.

99128968593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825744.

The product of its digits is 75582720, while the sum is 69.

The spelling of 99128968593 in words is "ninety-nine billion, one hundred twenty-eight million, nine hundred sixty-eight thousand, five hundred ninety-three".