99218417255 has 8 divisors (see below), whose sum is σ = 122902813824. Its totient is φ = 76814258400.

The previous prime is 99218417227. The next prime is 99218417303. The reversal of 99218417255 is 55271481299.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99218417255 - 2³⁶ = 30498940519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99218417197 and 99218417206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320059256 + ... + 320059565.

It is an arithmetic number, because the mean of its divisors is an integer number (15362851728).

Almost surely, 2^99218417255 is an apocalyptic number.

99218417255 is a deficient number, since it is larger than the sum of its proper divisors (23684396569).

99218417255 is a wasteful number, since it uses less digits than its factorization.

99218417255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640118857.

The product of its digits is 1814400, while the sum is 53.

The spelling of 99218417255 in words is "ninety-nine billion, two hundred eighteen million, four hundred seventeen thousand, two hundred fifty-five".