99646863516 has 72 divisors (see below), whose sum is σ = 265228301520. Its totient is φ = 31457217024.

The previous prime is 99646863461. The next prime is 99646863527. The reversal of 99646863516 is 61536864699.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2244106 + ... + 2288078.

It is an arithmetic number, because the mean of its divisors is an integer number (3683726410).

Almost surely, 2^99646863516 is an apocalyptic number.

It is an amenable number.

99646863516 is an abundant number, since it is smaller than the sum of its proper divisors (165581438004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99646863516 is a wasteful number, since it uses less digits than its factorization.

99646863516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47315 (or 47310 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 63.

The spelling of 99646863516 in words is "ninety-nine billion, six hundred forty-six million, eight hundred sixty-three thousand, five hundred sixteen".