129091292154816 has 112 divisors (see below), whose sum is σ = 365624311574400. Its totient is φ = 40074727560192.

The previous prime is 129091292154787. The next prime is 129091292154889. The reversal of 129091292154816 is 618451292190921.

It is a self number, because there is not a number n which added to its sum of digits gives 129091292154816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299673475 + ... + 300103938.

Almost surely, 2^{129091292154816} is an apocalyptic number.

129091292154816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129091292154816 is an abundant number, since it is smaller than the sum of its proper divisors (236533019419584).

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

129091292154816 is a wasteful number, since it uses less digits than its factorization.

129091292154816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599777506 (or 599777496 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 60.

The spelling of 129091292154816 in words is "one hundred twenty-nine trillion, ninety-one billion, two hundred ninety-two million, one hundred fifty-four thousand, eight hundred sixteen".