99561306311 has 8 divisors (see below), whose sum is σ = 100026939264. Its totient is φ = 99095844960.

The previous prime is 99561306283. The next prime is 99561306367. The reversal of 99561306311 is 11360316599.

It is a happy number.

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 99561306311 - 2¹⁰ = 99561305287 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 (99561302311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204565 + ... + 1284561.

It is an arithmetic number, because the mean of its divisors is an integer number (12503367408).

Almost surely, 2^99561306311 is an apocalyptic number.

99561306311 is a deficient number, since it is larger than the sum of its proper divisors (465632953).

99561306311 is a wasteful number, since it uses less digits than its factorization.

99561306311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85801.

The product of its (nonzero) digits is 131220, while the sum is 44.

The spelling of 99561306311 in words is "ninety-nine billion, five hundred sixty-one million, three hundred six thousand, three hundred eleven".