99716692621 has 8 divisors (see below), whose sum is σ = 122728237184. Its totient is φ = 78896723760.

The previous prime is 99716692613. The next prime is 99716692631. The reversal of 99716692621 is 12629661799.

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 99716692621 - 2³ = 99716692613 is a prime.

It is the 315780-th Hogben number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99716692631) by changing a digit.

It is a nontrivial repunit in base 315779.

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 7 ways as a sum of consecutive naturals, for example, 547893825 + ... + 547894006.

It is an arithmetic number, because the mean of its divisors is an integer number (15341029648).

Almost surely, 2^99716692621 is an apocalyptic number.

99716692621 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

99716692621 is a deficient number, since it is larger than the sum of its proper divisors (23011544563).

99716692621 is a wasteful number, since it uses less digits than its factorization.

99716692621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095787851.

The product of its digits is 4408992, while the sum is 58.

The spelling of 99716692621 in words is "ninety-nine billion, seven hundred sixteen million, six hundred ninety-two thousand, six hundred twenty-one".