99123447558 has 32 divisors (see below), whose sum is σ = 201022413696. Its totient is φ = 32578832448.

The previous prime is 99123447557. The next prime is 99123447559. The reversal of 99123447558 is 85574432199.

It is an interprime number because it is at equal distance from previous prime (99123447557) and next prime (99123447559).

It is a junction number, because it is equal to n+sod(n) for n = 99123447498 and 99123447507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99123447551) 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, 1521685 + ... + 1585487.

It is an arithmetic number, because the mean of its divisors is an integer number (6281950428).

Almost surely, 2^99123447558 is an apocalyptic number.

99123447558 is an abundant number, since it is smaller than the sum of its proper divisors (101898966138).

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

99123447558 is a wasteful number, since it uses less digits than its factorization.

99123447558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67428.

The product of its digits is 10886400, while the sum is 57.

The spelling of 99123447558 in words is "ninety-nine billion, one hundred twenty-three million, four hundred forty-seven thousand, five hundred fifty-eight".