129999999999974 has 16 divisors (see below), whose sum is σ = 210427698594960. Its totient is φ = 59877800401440.

The previous prime is 129999999999973. The next prime is 130000000000063. The reversal of 129999999999974 is 479999999999921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129999999999973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5091636929 + ... + 5091662460.

It is an arithmetic number, because the mean of its divisors is an integer number (13151731162185).

Almost surely, 2^{129999999999974} is an apocalyptic number.

129999999999974 is a deficient number, since it is larger than the sum of its proper divisors (80427698594986).

129999999999974 is a wasteful number, since it uses less digits than its factorization.

129999999999974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10183299895.

The product of its digits is 1757339338104, while the sum is 113.

The spelling of 129999999999974 in words is "one hundred twenty-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-four".