99979335355393 has 16 divisors (see below), whose sum is σ = 111383332416720. Its totient is φ = 89105836345344.

The previous prime is 99979335355379. The next prime is 99979335355409. The reversal of 99979335355393 is 39355353397999.

It can be written as a sum of positive squares in 8 ways, for example, as 1054271007729 + 98925064347664 = 1026777^2 + 9946108^2 .

It is a de Polignac number, because none of the positive numbers 2^k-99979335355393 is a prime.

It is a super-2 number, since 2×99979335355393² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99979035355393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103932505 + ... + 104890057.

It is an arithmetic number, because the mean of its divisors is an integer number (6961458276045).

Almost surely, 2^{99979335355393} is an apocalyptic number.

It is an amenable number.

99979335355393 is a deficient number, since it is larger than the sum of its proper divisors (11403997061327).

99979335355393 is a wasteful number, since it uses less digits than its factorization.

99979335355393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234548.

The product of its digits is 12555293625, while the sum is 82.

The spelling of 99979335355393 in words is "ninety-nine trillion, nine hundred seventy-nine billion, three hundred thirty-five million, three hundred fifty-five thousand, three hundred ninety-three".