20256244005 has 64 divisors (see below), whose sum is σ = 35197037568. Its totient is φ = 9908797440.

The previous prime is 20256243991. The next prime is 20256244031. The reversal of 20256244005 is 50044265202.

It is a happy number.

It is not a de Polignac number, because 20256244005 - 2²⁴ = 20239466789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2884879 + ... + 2891891.

It is an arithmetic number, because the mean of its divisors is an integer number (549953712).

Almost surely, 2^20256244005 is an apocalyptic number.

It is an amenable number.

20256244005 is a deficient number, since it is larger than the sum of its proper divisors (14940793563).

20256244005 is a wasteful number, since it uses less digits than its factorization.

20256244005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7326.

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 20256244005 in words is "twenty billion, two hundred fifty-six million, two hundred forty-four thousand, five".