255545345515 has 16 divisors (see below), whose sum is σ = 308348175168. Its totient is φ = 203308027776.

The previous prime is 255545345509. The next prime is 255545345527. The reversal of 255545345515 is 515543545552.

It is a cyclic number.

It is not a de Polignac number, because 255545345515 - 2³ = 255545345507 is a prime.

It is a super-3 number, since 3×255545345515³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2202034 + ... + 2315176.

It is an arithmetic number, because the mean of its divisors is an integer number (19271760948).

Almost surely, 2^255545345515 is an apocalyptic number.

255545345515 is a deficient number, since it is larger than the sum of its proper divisors (52802829653).

255545345515 is a wasteful number, since it uses less digits than its factorization.

255545345515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115638.

The product of its digits is 7500000, while the sum is 49.

The spelling of 255545345515 in words is "two hundred fifty-five billion, five hundred forty-five million, three hundred forty-five thousand, five hundred fifteen".