20372304161 has 16 divisors (see below), whose sum is σ = 23572980288. Its totient is φ = 17400230400.

The previous prime is 20372304149. The next prime is 20372304187. The reversal of 20372304161 is 16140327302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20372304161 - 2⁶ = 20372304097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20372306161) 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, 11381 + ... + 202173.

It is an arithmetic number, because the mean of its divisors is an integer number (1473311268).

Almost surely, 2^20372304161 is an apocalyptic number.

It is an amenable number.

20372304161 is a deficient number, since it is larger than the sum of its proper divisors (3200676127).

20372304161 is a wasteful number, since it uses less digits than its factorization.

20372304161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191392.

The product of its (nonzero) digits is 6048, while the sum is 29.

The spelling of 20372304161 in words is "twenty billion, three hundred seventy-two million, three hundred four thousand, one hundred sixty-one".