20272333491 has 6 divisors (see below), whose sum is σ = 29282259500. Its totient is φ = 13514888988.

The previous prime is 20272333489. The next prime is 20272333541. The reversal of 20272333491 is 19433327202.

It is not a de Polignac number, because 20272333491 - 2¹ = 20272333489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20272333591) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1126240741 + ... + 1126240758.

Almost surely, 2^20272333491 is an apocalyptic number.

20272333491 is a deficient number, since it is larger than the sum of its proper divisors (9009926009).

20272333491 is a wasteful number, since it uses less digits than its factorization.

20272333491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252481505 (or 2252481502 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The spelling of 20272333491 in words is "twenty billion, two hundred seventy-two million, three hundred thirty-three thousand, four hundred ninety-one".