20264240664460 has 48 divisors (see below), whose sum is σ = 48240378597600. Its totient is φ = 7088382157824.

The previous prime is 20264240664449. The next prime is 20264240664557. The reversal of 20264240664460 is 6446604246202.

It is a self number, because there is not a number n which added to its sum of digits gives 20264240664460.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2051031565 + ... + 2051041444.

It is an arithmetic number, because the mean of its divisors is an integer number (1005007887450).

Almost surely, 2^{20264240664460} is an apocalyptic number.

20264240664460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20264240664460 is an abundant number, since it is smaller than the sum of its proper divisors (27976137933140).

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

20264240664460 is a wasteful number, since it uses less digits than its factorization.

20264240664460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102073050 (or 4102073048 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 46.

The spelling of 20264240664460 in words is "twenty trillion, two hundred sixty-four billion, two hundred forty million, six hundred sixty-four thousand, four hundred sixty".