99557770090 has 16 divisors (see below), whose sum is σ = 179270431200. Its totient is φ = 39808342480.

The previous prime is 99557770087. The next prime is 99557770093. The reversal of 99557770090 is 9007775599.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99557770087) and next prime (99557770093).

It is not an unprimeable number, because it can be changed into a prime (99557770093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1817356 + ... + 1871335.

It is an arithmetic number, because the mean of its divisors is an integer number (11204401950).

Almost surely, 2^99557770090 is an apocalyptic number.

99557770090 is a deficient number, since it is larger than the sum of its proper divisors (79712661110).

99557770090 is a wasteful number, since it uses less digits than its factorization.

99557770090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691397.

The product of its (nonzero) digits is 6251175, while the sum is 58.

The spelling of 99557770090 in words is "ninety-nine billion, five hundred fifty-seven million, seven hundred seventy thousand, ninety".