20365648575 has 24 divisors (see below), whose sum is σ = 33716615808. Its totient is φ = 10847030880.

The previous prime is 20365648573. The next prime is 20365648643. The reversal of 20365648575 is 57584656302.

It is not a de Polignac number, because 20365648575 - 2¹ = 20365648573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20365648573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127009 + ... + 238458.

It is an arithmetic number, because the mean of its divisors is an integer number (1404858992).

Almost surely, 2^20365648575 is an apocalyptic number.

20365648575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20365648575 is a deficient number, since it is larger than the sum of its proper divisors (13350967233).

20365648575 is a wasteful number, since it uses less digits than its factorization.

20365648575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366223 (or 366218 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 51.

The spelling of 20365648575 in words is "twenty billion, three hundred sixty-five million, six hundred forty-eight thousand, five hundred seventy-five".