99578603213 has 4 divisors (see below), whose sum is σ = 99581637468. Its totient is φ = 99575568960.

The previous prime is 99578603207. The next prime is 99578603221. The reversal of 99578603213 is 31230687599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31230687599 = 739 ⋅42260741.

It can be written as a sum of positive squares in 2 ways, for example, as 26282245924 + 73296357289 = 162118^2 + 270733^2 .

It is a cyclic number.

It is not a de Polignac number, because 99578603213 - 2²² = 99574408909 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 (99578603233) 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, 1467356 + ... + 1533717.

It is an arithmetic number, because the mean of its divisors is an integer number (24895409367).

Almost surely, 2^99578603213 is an apocalyptic number.

It is an amenable number.

99578603213 is a deficient number, since it is larger than the sum of its proper divisors (3034255).

99578603213 is a wasteful number, since it uses less digits than its factorization.

99578603213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034254.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 99578603213 in words is "ninety-nine billion, five hundred seventy-eight million, six hundred three thousand, two hundred thirteen".