20384736275 has 12 divisors (see below), whose sum is σ = 25309215672. Its totient is φ = 16287051840.

The previous prime is 20384736257. The next prime is 20384736277. The reversal of 20384736275 is 57263748302.

It is not a de Polignac number, because 20384736275 - 2⁸ = 20384736019 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20384736277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 498362 + ... + 537711.

It is an arithmetic number, because the mean of its divisors is an integer number (2109101306).

Almost surely, 2^20384736275 is an apocalyptic number.

20384736275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20384736275 is a deficient number, since it is larger than the sum of its proper divisors (4924479397).

20384736275 is a wasteful number, since it uses less digits than its factorization.

20384736275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036870 (or 1036865 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 20384736275 in words is "twenty billion, three hundred eighty-four million, seven hundred thirty-six thousand, two hundred seventy-five".