20465587375 has 8 divisors (see below), whose sum is σ = 25541053200. Its totient is φ = 16372469800.

The previous prime is 20465587279. The next prime is 20465587379. The reversal of 20465587375 is 57378556402.

It is a happy number.

It is not a de Polignac number, because 20465587375 - 2²⁷ = 20331369647 is a prime.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20465587379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81862225 + ... + 81862474.

It is an arithmetic number, because the mean of its divisors is an integer number (3192631650).

Almost surely, 2^20465587375 is an apocalyptic number.

20465587375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20465587375 is a deficient number, since it is larger than the sum of its proper divisors (5075465825).

20465587375 is an equidigital number, since it uses as much as digits as its factorization.

20465587375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163724714 (or 163724704 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 52.

The spelling of 20465587375 in words is "twenty billion, four hundred sixty-five million, five hundred eighty-seven thousand, three hundred seventy-five".