20570235994 has 32 divisors (see below), whose sum is σ = 40731901056. Its totient is φ = 7542942720.

The previous prime is 20570235989. The next prime is 20570236081. The reversal of 20570235994 is 49953207502.

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, 3925999 + ... + 3931234.

It is an arithmetic number, because the mean of its divisors is an integer number (1272871908).

Almost surely, 2^20570235994 is an apocalyptic number.

20570235994 is a deficient number, since it is larger than the sum of its proper divisors (20161665062).

20570235994 is a wasteful number, since it uses less digits than its factorization.

20570235994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7857270.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 20570235994 in words is "twenty billion, five hundred seventy million, two hundred thirty-five thousand, nine hundred ninety-four".