129124540911 has 16 divisors (see below), whose sum is σ = 181307548800. Its totient is φ = 81516286368.

The previous prime is 129124540877. The next prime is 129124540921. The reversal of 129124540911 is 119045421921.

It is not a de Polignac number, because 129124540911 - 2²³ = 129116152303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129124540911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129124540921) 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, 370416 + ... + 628853.

It is an arithmetic number, because the mean of its divisors is an integer number (11331721800).

Almost surely, 2^129124540911 is an apocalyptic number.

129124540911 is a deficient number, since it is larger than the sum of its proper divisors (52183007889).

129124540911 is a wasteful number, since it uses less digits than its factorization.

129124540911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001558.

The product of its (nonzero) digits is 25920, while the sum is 39.

The spelling of 129124540911 in words is "one hundred twenty-nine billion, one hundred twenty-four million, five hundred forty thousand, nine hundred eleven".