129916300621 has 16 divisors (see below), whose sum is σ = 135011155968. Its totient is φ = 124949286000.

The previous prime is 129916300601. The next prime is 129916300643. The reversal of 129916300621 is 126003619921.

It is a cyclic number.

It is not a de Polignac number, because 129916300621 - 2¹¹ = 129916298573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129916300601) 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, 357396 + ... + 622546.

It is an arithmetic number, because the mean of its divisors is an integer number (8438197248).

Almost surely, 2^129916300621 is an apocalyptic number.

It is an amenable number.

129916300621 is a deficient number, since it is larger than the sum of its proper divisors (5094855347).

129916300621 is a wasteful number, since it uses less digits than its factorization.

129916300621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265392.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 129916300621 in words is "one hundred twenty-nine billion, nine hundred sixteen million, three hundred thousand, six hundred twenty-one".