99821250478404 has 96 divisors (see below), whose sum is σ = 318517950275840. Its totient is φ = 26326483640064.

The previous prime is 99821250478343. The next prime is 99821250478423. The reversal of 99821250478404 is 40487405212899.

99821250478404 is a `hidden beast` number, since 9 + 9 + 8 + 2 + 12 + 504 + 78 + 40 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5078401369 + ... + 5078421024.

Almost surely, 2^{99821250478404} is an apocalyptic number.

It is an amenable number.

99821250478404 is an abundant number, since it is smaller than the sum of its proper divisors (218696699797436).

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

99821250478404 is a wasteful number, since it uses less digits than its factorization.

99821250478404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10156822426 (or 10156822418 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 99821250478404 in words is "ninety-nine trillion, eight hundred twenty-one billion, two hundred fifty million, four hundred seventy-eight thousand, four hundred four".