255512017563 has 16 divisors (see below), whose sum is σ = 371675778816. Its totient is φ = 154846628640.

The previous prime is 255512017559. The next prime is 255512017591. The reversal of 255512017563 is 365710215552.

It is not a de Polignac number, because 255512017563 - 2² = 255512017559 is a prime.

It is a super-2 number, since 2×255512017563² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255512017063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361881 + ... + 801237.

It is an arithmetic number, because the mean of its divisors is an integer number (23229736176).

Almost surely, 2^255512017563 is an apocalyptic number.

255512017563 is a deficient number, since it is larger than the sum of its proper divisors (116163761253).

255512017563 is a wasteful number, since it uses less digits than its factorization.

255512017563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456994.

The product of its (nonzero) digits is 315000, while the sum is 42.

The spelling of 255512017563 in words is "two hundred fifty-five billion, five hundred twelve million, seventeen thousand, five hundred sixty-three".