20585594442465 has 160 divisors (see below), whose sum is σ = 42124179879936. Its totient is φ = 9527794698240.

The previous prime is 20585594442451. The next prime is 20585594442473. The reversal of 20585594442465 is 56424449558502.

20585594442465 is a `hidden beast` number, since 2 + 0 + 5 + 85 + 5 + 94 + 4 + 4 + 2 + 465 = 666.

It is not a de Polignac number, because 20585594442465 - 2⁶ = 20585594442401 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 81412824 + ... + 81665286.

Almost surely, 2^{20585594442465} is an apocalyptic number.

It is an amenable number.

20585594442465 is an abundant number, since it is smaller than the sum of its proper divisors (21538585437471).

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

20585594442465 is a wasteful number, since it uses less digits than its factorization.

20585594442465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253421 (or 253412 counting only the distinct ones).

The product of its (nonzero) digits is 276480000, while the sum is 63.

The spelling of 20585594442465 in words is "twenty trillion, five hundred eighty-five billion, five hundred ninety-four million, four hundred forty-two thousand, four hundred sixty-five".