99976607641 has 64 divisors (see below), whose sum is σ = 110621491200.
Its totient is φ = 90150278400.
The previous prime is 99976607639. The next prime is 99976607651. The reversal of 99976607641 is 14670667999.
It is a 3-Lehmer number, since φ(99976607641) divides (99976607641-1)3.
It is a cyclic number.
It is a Carmichael number.
It is not a de Polignac number, because 99976607641 - 21 = 99976607639 is a prime.
It is a deceptive number, since it divides R99976607640.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (99976607651) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 763180146 + ... + 763180276.
It is an arithmetic number, because the mean of its divisors is an integer number (1728460800).
It is a Poulet number, since it divides 299976607640-1.
Almost surely, 299976607641 is an apocalyptic number.
It is an amenable number.
99976607641 is a deficient number, since it is larger than the sum of its proper divisors (10644883559).
99976607641 is a wasteful number, since it uses less digits than its factorization.
99976607641 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 470.
The product of its (nonzero) digits is 30862944, while the sum is 64.
The spelling of 99976607641 in words is "ninety-nine billion, nine hundred seventy-six million, six hundred seven thousand, six hundred forty-one".