99579657619 has 8 divisors (see below), whose sum is σ = 108750049632. Its totient is φ = 90625039680.

The previous prime is 99579657607. The next prime is 99579657631. The reversal of 99579657619 is 91675697599.

It is an interprime number because it is at equal distance from previous prime (99579657607) and next prime (99579657631).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99579657619 - 2¹⁹ = 99579133331 is a prime.

It is a super-2 number, since 2×99579657619² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99579607619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53942554 + ... + 53944399.

It is an arithmetic number, because the mean of its divisors is an integer number (13593756204).

Almost surely, 2^99579657619 is an apocalyptic number.

99579657619 is a deficient number, since it is larger than the sum of its proper divisors (9170392013).

99579657619 is a wasteful number, since it uses less digits than its factorization.

99579657619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107887037.

The product of its digits is 289340100, while the sum is 73.

The spelling of 99579657619 in words is "ninety-nine billion, five hundred seventy-nine million, six hundred fifty-seven thousand, six hundred nineteen".