20372261129 has 12 divisors (see below), whose sum is σ = 22442278032. Its totient is φ = 18340324200.

The previous prime is 20372261089. The next prime is 20372261153. The reversal of 20372261129 is 92116227302.

It is a happy number.

It is not a de Polignac number, because 20372261129 - 2²⁴ = 20355483913 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20372261159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29414 + ... + 203984.

It is an arithmetic number, because the mean of its divisors is an integer number (1870189836).

Almost surely, 2^20372261129 is an apocalyptic number.

It is an amenable number.

20372261129 is a deficient number, since it is larger than the sum of its proper divisors (2070016903).

20372261129 is a wasteful number, since it uses less digits than its factorization.

20372261129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174788 (or 174685 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 20372261129 in words is "twenty billion, three hundred seventy-two million, two hundred sixty-one thousand, one hundred twenty-nine".