20461304125161 has 24 divisors (see below), whose sum is σ = 30044799613920. Its totient is φ = 13415566070016.

The previous prime is 20461304125139. The next prime is 20461304125181. The reversal of 20461304125161 is 16152140316402.

20461304125161 is a `hidden beast` number, since 2 + 0 + 4 + 6 + 130 + 4 + 1 + 2 + 516 + 1 = 666.

It is not a de Polignac number, because 20461304125161 - 2³⁷ = 20323865171689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20461304125181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27035880 + ... + 27782393.

It is an arithmetic number, because the mean of its divisors is an integer number (1251866650580).

Almost surely, 2^{20461304125161} is an apocalyptic number.

It is an amenable number.

20461304125161 is a deficient number, since it is larger than the sum of its proper divisors (9583495488759).

20461304125161 is a wasteful number, since it uses less digits than its factorization.

20461304125161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54818965 (or 54818962 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 20461304125161 in words is "twenty trillion, four hundred sixty-one billion, three hundred four million, one hundred twenty-five thousand, one hundred sixty-one".