99217169415 has 96 divisors (see below), whose sum is σ = 222803642880. Its totient is φ = 39663883008.

The previous prime is 99217169413. The next prime is 99217169437. The reversal of 99217169415 is 51496171299.

It is a happy number.

99217169415 is a `hidden beast` number, since 9 + 9 + 217 + 1 + 6 + 9 + 415 = 666.

It is not a de Polignac number, because 99217169415 - 2¹ = 99217169413 is a prime.

It is a super-2 number, since 2×99217169415² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99217169413) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 559797 + ... + 715406.

It is an arithmetic number, because the mean of its divisors is an integer number (2320871280).

Almost surely, 2^99217169415 is an apocalyptic number.

99217169415 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

99217169415 is an abundant number, since it is smaller than the sum of its proper divisors (123586473465).

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

99217169415 is a wasteful number, since it uses less digits than its factorization.

99217169415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275253 (or 1275250 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The spelling of 99217169415 in words is "ninety-nine billion, two hundred seventeen million, one hundred sixty-nine thousand, four hundred fifteen".