129753892045 has 24 divisors (see below), whose sum is σ = 165871753704. Its totient is φ = 97419902976.

The previous prime is 129753892033. The next prime is 129753892067. The reversal of 129753892045 is 540298357921.

It can be written as a sum of positive squares in 12 ways, for example, as 2514721609 + 127239170436 = 50147^2 + 356706^2 .

It is not a de Polignac number, because 129753892045 - 2²⁵ = 129720337613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 382897 + ... + 637273.

It is an arithmetic number, because the mean of its divisors is an integer number (6911323071).

Almost surely, 2^129753892045 is an apocalyptic number.

It is an amenable number.

129753892045 is a deficient number, since it is larger than the sum of its proper divisors (36117861659).

129753892045 is a wasteful number, since it uses less digits than its factorization.

129753892045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254769 (or 254752 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 129753892045 in words is "one hundred twenty-nine billion, seven hundred fifty-three million, eight hundred ninety-two thousand, forty-five".