20413525516644 has 24 divisors (see below), whose sum is σ = 51295525657600. Its totient is φ = 6281084774304.

The previous prime is 20413525516621. The next prime is 20413525516673. The reversal of 20413525516644 is 44661552531402.

It is a junction number, because it is equal to n+sod(n) for n = 20413525516593 and 20413525516602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65427966244 + ... + 65427966555.

Almost surely, 2^{20413525516644} is an apocalyptic number.

It is an amenable number.

20413525516644 is an abundant number, since it is smaller than the sum of its proper divisors (30882000140956).

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

20413525516644 is a wasteful number, since it uses less digits than its factorization.

20413525516644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130855932819 (or 130855932817 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 20413525516644 in words is "twenty trillion, four hundred thirteen billion, five hundred twenty-five million, five hundred sixteen thousand, six hundred forty-four".