20259593415 has 12 divisors (see below), whose sum is σ = 35116628664. Its totient is φ = 10805116464.

The previous prime is 20259593399. The next prime is 20259593437. The reversal of 20259593415 is 51439595202.

20259593415 is a `hidden beast` number, since 2 + 0 + 2 + 59 + 593 + 4 + 1 + 5 = 666.

It is not a de Polignac number, because 20259593415 - 2⁴ = 20259593399 is a prime.

It is a super-2 number, since 2×20259593415² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 450213187 = 20259593415 / (2 + 0 + 2 + 5 + 9 + 5 + 9 + 3 + 4 + 1 + 5).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225106549 + ... + 225106638.

It is an arithmetic number, because the mean of its divisors is an integer number (2926385722).

Almost surely, 2^20259593415 is an apocalyptic number.

20259593415 is a deficient number, since it is larger than the sum of its proper divisors (14857035249).

20259593415 is a wasteful number, since it uses less digits than its factorization.

20259593415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450213198 (or 450213195 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 20259593415 in words is "twenty billion, two hundred fifty-nine million, five hundred ninety-three thousand, four hundred fifteen".