20838444535 has 32 divisors (see below), whose sum is σ = 26682348672. Its totient is φ = 15568834560.

The previous prime is 20838444509. The next prime is 20838444581. The reversal of 20838444535 is 53544483802.

It is not a de Polignac number, because 20838444535 - 2⁹ = 20838444023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12107475 + ... + 12109195.

It is an arithmetic number, because the mean of its divisors is an integer number (833823396).

Almost surely, 2^20838444535 is an apocalyptic number.

20838444535 is a deficient number, since it is larger than the sum of its proper divisors (5843904137).

20838444535 is a wasteful number, since it uses less digits than its factorization.

20838444535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763.

The product of its (nonzero) digits is 1843200, while the sum is 46.

The spelling of 20838444535 in words is "twenty billion, eight hundred thirty-eight million, four hundred forty-four thousand, five hundred thirty-five".