20571048786 has 16 divisors (see below), whose sum is σ = 41146095168. Its totient is φ = 6856350000.

The previous prime is 20571048749. The next prime is 20571048791. The reversal of 20571048786 is 68784017502.

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, 97465 + ... + 225036.

It is an arithmetic number, because the mean of its divisors is an integer number (2571630948).

Almost surely, 2^20571048786 is an apocalyptic number.

20571048786 is an abundant number, since it is smaller than the sum of its proper divisors (20575046382).

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

20571048786 is a wasteful number, since it uses less digits than its factorization.

20571048786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333137.

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 20571048786 in words is "twenty billion, five hundred seventy-one million, forty-eight thousand, seven hundred eighty-six".