99605176879 has 4 divisors (see below), whose sum is σ = 107267113576. Its totient is φ = 91943240184.

The previous prime is 99605176871. The next prime is 99605176921. The reversal of 99605176879 is 97867150699.

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 99605176879 - 2³ = 99605176871 is a prime.

It is a super-2 number, since 2×99605176879² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99605176871) 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, 3830968329 + ... + 3830968354.

It is an arithmetic number, because the mean of its divisors is an integer number (26816778394).

Almost surely, 2^99605176879 is an apocalyptic number.

99605176879 is a deficient number, since it is larger than the sum of its proper divisors (7661936697).

99605176879 is a wasteful number, since it uses less digits than its factorization.

99605176879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7661936696.

The product of its (nonzero) digits is 51438240, while the sum is 67.

The spelling of 99605176879 in words is "ninety-nine billion, six hundred five million, one hundred seventy-six thousand, eight hundred seventy-nine".