20523046115664 has 120 divisors (see below), whose sum is σ = 57772808970240. Its totient is φ = 6800908697856.

The previous prime is 20523046115623. The next prime is 20523046115699. The reversal of 20523046115664 is 46651164032502.

20523046115664 is a `hidden beast` number, since 2 + 0 + 5 + 2 + 30 + 46 + 11 + 566 + 4 = 666.

It is a congruent number.

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, 390568977 + ... + 390621519.

It is an arithmetic number, because the mean of its divisors is an integer number (481440074752).

Almost surely, 2^{20523046115664} is an apocalyptic number.

20523046115664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20523046115664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28886404485120).

20523046115664 is an abundant number, since it is smaller than the sum of its proper divisors (37249762854576).

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

20523046115664 is a wasteful number, since it uses less digits than its factorization.

20523046115664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68409 (or 68400 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 20523046115664 in words is "twenty trillion, five hundred twenty-three billion, forty-six million, one hundred fifteen thousand, six hundred sixty-four".