99517090084451 has 16 divisors (see below), whose sum is σ = 110148695462400. Its totient is φ = 89345401805088.

The previous prime is 99517090084439. The next prime is 99517090084463. The reversal of 99517090084451 is 15448009071599.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99517090084439) and next prime (99517090084463).

It is not a de Polignac number, because 99517090084451 - 2³⁰ = 99516016342627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99517090083451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723071261 + ... + 723208878.

It is an arithmetic number, because the mean of its divisors is an integer number (6884293466400).

Almost surely, 2^{99517090084451} is an apocalyptic number.

99517090084451 is a deficient number, since it is larger than the sum of its proper divisors (10631605377949).

99517090084451 is a wasteful number, since it uses less digits than its factorization.

99517090084451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446280298.

The product of its (nonzero) digits is 16329600, while the sum is 62.

The spelling of 99517090084451 in words is "ninety-nine trillion, five hundred seventeen billion, ninety million, eighty-four thousand, four hundred fifty-one".