20271084738 has 32 divisors (see below), whose sum is σ = 42241953600. Its totient is φ = 6477084096.

The previous prime is 20271084697. The next prime is 20271084739. The reversal of 20271084738 is 83748017202.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20271084738.

It is not an unprimeable number, because it can be changed into a prime (20271084739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394881 + ... + 443252.

It is an arithmetic number, because the mean of its divisors is an integer number (1320061050).

Almost surely, 2^20271084738 is an apocalyptic number.

20271084738 is an abundant number, since it is smaller than the sum of its proper divisors (21970868862).

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

20271084738 is a wasteful number, since it uses less digits than its factorization.

20271084738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838306.

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 20271084738 in words is "twenty billion, two hundred seventy-one million, eighty-four thousand, seven hundred thirty-eight".