99999999999974 has 16 divisors (see below), whose sum is σ = 154061790350400. Its totient is φ = 48646205607744.

The previous prime is 99999999999973. The next prime is 100000000000031. The reversal of 99999999999974 is 47999999999999.

99999999999974 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-9 number, since 9×99999999999974⁹ (a number of 127 digits) contains 999999999 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999999999971) 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, 32447159 + ... + 35395170.

It is an arithmetic number, because the mean of its divisors is an integer number (9628861896900).

Almost surely, 2^{99999999999974} is an apocalyptic number.

99999999999974 is a deficient number, since it is larger than the sum of its proper divisors (54061790350426).

99999999999974 is a wasteful number, since it uses less digits than its factorization.

99999999999974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67862287.

The product of its digits is 7908027021468, while the sum is 119.

It can be divided in two parts, 9999999999997 and 4, that added together give a palindrome (10000000000001).

The spelling of 99999999999974 in words is "ninety-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-four".