255775579515 has 12 divisors (see below), whose sum is σ = 443344337904. Its totient is φ = 136413642384.

The previous prime is 255775579511. The next prime is 255775579519. The reversal of 255775579515 is 515975577552.

It is a happy number.

255775579515 is a `hidden beast` number, since 2 + 5 + 5 + 7 + 7 + 5 + 579 + 51 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (255775579511) and next prime (255775579519).

It is not a de Polignac number, because 255775579515 - 2² = 255775579511 is a prime.

It is a super-2 number, since 2×255775579515² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (255775579511) 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, 2841950839 + ... + 2841950928.

It is an arithmetic number, because the mean of its divisors is an integer number (36945361492).

Almost surely, 2^255775579515 is an apocalyptic number.

255775579515 is a deficient number, since it is larger than the sum of its proper divisors (187568758389).

255775579515 is a wasteful number, since it uses less digits than its factorization.

255775579515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5683901778 (or 5683901775 counting only the distinct ones).

The product of its digits is 96468750, while the sum is 63.

The spelling of 255775579515 in words is "two hundred fifty-five billion, seven hundred seventy-five million, five hundred seventy-nine thousand, five hundred fifteen".