99398806650 has 144 divisors (see below), whose sum is σ = 313738981920. Its totient is φ = 22243075200.

The previous prime is 99398806609. The next prime is 99398806651. The reversal of 99398806650 is 5660889399.

It is not an unprimeable number, because it can be changed into a prime (99398806651) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 707980 + ... + 836679.

It is an arithmetic number, because the mean of its divisors is an integer number (2178742930).

Almost surely, 2^99398806650 is an apocalyptic number.

99398806650 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

99398806650 is an abundant number, since it is smaller than the sum of its proper divisors (214340175270).

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

99398806650 is a wasteful number, since it uses less digits than its factorization.

99398806650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544701 (or 1544693 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 63.

The spelling of 99398806650 in words is "ninety-nine billion, three hundred ninety-eight million, eight hundred six thousand, six hundred fifty".