129764363467921 has 16 divisors (see below), whose sum is σ = 159715515149568. Its totient is φ = 102667150584000.

The previous prime is 129764363467861. The next prime is 129764363467943.

129764363467921 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 129764363467921 - 2²⁷ = 129764229250193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129764363467021) 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, 22040125 + ... + 27300106.

It is an arithmetic number, because the mean of its divisors is an integer number (9982219696848).

Almost surely, 2^{129764363467921} is an apocalyptic number.

It is an amenable number.

129764363467921 is a deficient number, since it is larger than the sum of its proper divisors (29951151681647).

129764363467921 is a wasteful number, since it uses less digits than its factorization.

129764363467921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49369152.

The product of its digits is 493807104, while the sum is 70.

The spelling of 129764363467921 in words is "one hundred twenty-nine trillion, seven hundred sixty-four billion, three hundred sixty-three million, four hundred sixty-seven thousand, nine hundred twenty-one".