99218417256 has 48 divisors (see below), whose sum is σ = 307104626400. Its totient is φ = 28348119072.

The previous prime is 99218417227. The next prime is 99218417303. The reversal of 99218417256 is 65271481299.

It is a happy number.

99218417256 is a `hidden beast` number, since 9 + 9 + 218 + 417 + 2 + 5 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98430466 + ... + 98431473.

It is an arithmetic number, because the mean of its divisors is an integer number (6398013050).

Almost surely, 2^99218417256 is an apocalyptic number.

It is an amenable number.

99218417256 is an abundant number, since it is smaller than the sum of its proper divisors (207886209144).

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

99218417256 is a wasteful number, since it uses less digits than its factorization.

99218417256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196861958 (or 196861951 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The spelling of 99218417256 in words is "ninety-nine billion, two hundred eighteen million, four hundred seventeen thousand, two hundred fifty-six".