99966195522 has 30 divisors (see below), whose sum is σ = 224007344649. Its totient is φ = 33320723760.

The previous prime is 99966195493. The next prime is 99966195533. The reversal of 99966195522 is 22559166999.

99966195522 is a `hidden beast` number, since 9 + 9 + 9 + 6 + 619 + 5 + 5 + 2 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 74901289761 + 25064905761 = 273681^2 + 158319^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=223569.

It is a self number, because there is not a number n which added to its sum of digits gives 99966195522.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 4011822 + ... + 4036662.

Almost surely, 2^99966195522 is an apocalyptic number.

99966195522 is an abundant number, since it is smaller than the sum of its proper divisors (124041149127).

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

99966195522 is an frugal number, since it uses more digits than its factorization.

99966195522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49696 (or 24846 counting only the distinct ones).

The product of its digits is 23619600, while the sum is 63.

It can be divided in two parts, 9 and 9966195522, that multiplied together give a palindrome (89695759698).

The spelling of 99966195522 in words is "ninety-nine billion, nine hundred sixty-six million, one hundred ninety-five thousand, five hundred twenty-two".