255752761797481 has 16 divisors (see below), whose sum is σ = 275467928924160. Its totient is φ = 236043580181760.

The previous prime is 255752761797457. The next prime is 255752761797493. The reversal of 255752761797481 is 184797167257552.

It is a happy number.

It is not a de Polignac number, because 255752761797481 - 2⁷ = 255752761797353 is a prime.

It is a super-2 number, since 2×255752761797481² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255752761797398 and 255752761797407.

It is not an unprimeable number, because it can be changed into a prime (255752765797481) 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, 2707391256 + ... + 2707485718.

It is an arithmetic number, because the mean of its divisors is an integer number (17216745557760).

Almost surely, 2^{255752761797481} is an apocalyptic number.

It is an amenable number.

255752761797481 is a deficient number, since it is larger than the sum of its proper divisors (19715167126679).

255752761797481 is a wasteful number, since it uses less digits than its factorization.

255752761797481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123936.

The product of its digits is 2074464000, while the sum is 76.

The spelling of 255752761797481 in words is "two hundred fifty-five trillion, seven hundred fifty-two billion, seven hundred sixty-one million, seven hundred ninety-seven thousand, four hundred eighty-one".