99136880639 has 4 divisors (see below), whose sum is σ = 99138177000. Its totient is φ = 99135584280.

The previous prime is 99136880629. The next prime is 99136880641. The reversal of 99136880639 is 93608863199.

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 99136880639 - 2²⁰ = 99135832063 is a prime.

It is a super-2 number, since 2×99136880639² (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 (99136880629) 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 3 ways as a sum of consecutive naturals, for example, 525764 + ... + 688985.

It is an arithmetic number, because the mean of its divisors is an integer number (24784544250).

Almost surely, 2^99136880639 is an apocalyptic number.

99136880639 is a deficient number, since it is larger than the sum of its proper divisors (1296361).

99136880639 is a wasteful number, since it uses less digits than its factorization.

99136880639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296360.

The product of its (nonzero) digits is 15116544, while the sum is 62.

The spelling of 99136880639 in words is "ninety-nine billion, one hundred thirty-six million, eight hundred eighty thousand, six hundred thirty-nine".