20574703617 has 16 divisors (see below), whose sum is σ = 29669971968. Its totient is φ = 12607009920.

The previous prime is 20574703607. The next prime is 20574703657. The reversal of 20574703617 is 71630747502.

It is not a de Polignac number, because 20574703617 - 2⁴ = 20574703601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20574703607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1123009 + ... + 1141182.

It is an arithmetic number, because the mean of its divisors is an integer number (1854373248).

Almost surely, 2^20574703617 is an apocalyptic number.

It is an amenable number.

20574703617 is a deficient number, since it is larger than the sum of its proper divisors (9095268351).

20574703617 is a wasteful number, since it uses less digits than its factorization.

20574703617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264440.

The product of its (nonzero) digits is 246960, while the sum is 42.

The spelling of 20574703617 in words is "twenty billion, five hundred seventy-four million, seven hundred three thousand, six hundred seventeen".