99689454494207 has 16 divisors (see below), whose sum is σ = 102805244868480. Its totient is φ = 96616169148672.

The previous prime is 99689454494171. The next prime is 99689454494213. The reversal of 99689454494207 is 70249445498699.

It is a happy number.

It is not a de Polignac number, because 99689454494207 - 2³⁶ = 99620735017471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99689454494807) 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, 2926283 + ... + 14420195.

It is an arithmetic number, because the mean of its divisors is an integer number (6425327804280).

Almost surely, 2^{99689454494207} is an apocalyptic number.

99689454494207 is a deficient number, since it is larger than the sum of its proper divisors (3115790374273).

99689454494207 is a wasteful number, since it uses less digits than its factorization.

99689454494207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11495762.

The product of its (nonzero) digits is 5643509760, while the sum is 80.

The spelling of 99689454494207 in words is "ninety-nine trillion, six hundred eighty-nine billion, four hundred fifty-four million, four hundred ninety-four thousand, two hundred seven".