20256417570 has 16 divisors (see below), whose sum is σ = 48615402240. Its totient is φ = 5401711344.

The previous prime is 20256417563. The next prime is 20256417589. The reversal of 20256417570 is 7571465202.

20256417570 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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, 337606930 + ... + 337606989.

It is an arithmetic number, because the mean of its divisors is an integer number (3038462640).

Almost surely, 2^20256417570 is an apocalyptic number.

20256417570 is an abundant number, since it is smaller than the sum of its proper divisors (28358984670).

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

20256417570 is a wasteful number, since it uses less digits than its factorization.

20256417570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675213929.

The product of its (nonzero) digits is 117600, while the sum is 39.

The spelling of 20256417570 in words is "twenty billion, two hundred fifty-six million, four hundred seventeen thousand, five hundred seventy".