129572220024 has 64 divisors (see below), whose sum is σ = 387609213600. Its totient is φ = 39868374528.

The previous prime is 129572220017. The next prime is 129572220047. The reversal of 129572220024 is 420022275921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23069169 + ... + 23074784.

Almost surely, 2^129572220024 is an apocalyptic number.

It is an amenable number.

129572220024 is an abundant number, since it is smaller than the sum of its proper divisors (258036993576).

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

129572220024 is a wasteful number, since it uses less digits than its factorization.

129572220024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46143981 (or 46143971 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

Adding to 129572220024 its reverse (420022275921), we get a palindrome (549594495945).

The spelling of 129572220024 in words is "one hundred twenty-nine billion, five hundred seventy-two million, two hundred twenty thousand, twenty-four".