20561413106124 has 72 divisors (see below), whose sum is σ = 56736260053200. Its totient is φ = 6226708636800.

The previous prime is 20561413106107. The next prime is 20561413106141. The reversal of 20561413106124 is 42160131416502.

20561413106124 is a `hidden beast` number, since 2 + 0 + 5 + 6 + 1 + 4 + 1 + 31 + 0 + 612 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (20561413106107) and next prime (20561413106141).

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

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, 16146687 + ... + 17373494.

It is an arithmetic number, because the mean of its divisors is an integer number (788003611850).

Almost surely, 2^{20561413106124} is an apocalyptic number.

It is an amenable number.

20561413106124 is an abundant number, since it is smaller than the sum of its proper divisors (36174846947076).

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

20561413106124 is a wasteful number, since it uses less digits than its factorization.

20561413106124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33521751 (or 33521746 counting only the distinct ones).

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

The spelling of 20561413106124 in words is "twenty trillion, five hundred sixty-one billion, four hundred thirteen million, one hundred six thousand, one hundred twenty-four".