99574447599 has 72 divisors (see below), whose sum is σ = 167574790656. Its totient is φ = 56736768000.

The previous prime is 99574447591. The next prime is 99574447613.

99574447599 is a `hidden beast` number, since 9 + 9 + 574 + 4 + 47 + 5 + 9 + 9 = 666.

99574447599 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99574447599 - 2³ = 99574447591 is a prime.

It is a super-2 number, since 2×99574447599² (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 (99574447591) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 21306127 + ... + 21310799.

It is an arithmetic number, because the mean of its divisors is an integer number (2327427648).

Almost surely, 2^99574447599 is an apocalyptic number.

99574447599 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

99574447599 is a deficient number, since it is larger than the sum of its proper divisors (68000343057).

99574447599 is a wasteful number, since it uses less digits than its factorization.

99574447599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5869 (or 5855 counting only the distinct ones).

The product of its digits is 514382400, while the sum is 72.

The spelling of 99574447599 in words is "ninety-nine billion, five hundred seventy-four million, four hundred forty-seven thousand, five hundred ninety-nine".