255407774167 has 32 divisors (see below), whose sum is σ = 331392466944. Its totient is φ = 191401142400.

The previous prime is 255407774099. The next prime is 255407774179. The reversal of 255407774167 is 761477704552.

It is a happy number.

It is not a de Polignac number, because 255407774167 - 2³¹ = 253260290519 is a prime.

It is a super-2 number, since 2×255407774167² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255407714167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 830584 + ... + 1095757.

It is an arithmetic number, because the mean of its divisors is an integer number (10356014592).

Almost surely, 2^255407774167 is an apocalyptic number.

255407774167 is a deficient number, since it is larger than the sum of its proper divisors (75984692777).

255407774167 is a wasteful number, since it uses less digits than its factorization.

255407774167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926439.

The product of its (nonzero) digits is 11524800, while the sum is 55.

The spelling of 255407774167 in words is "two hundred fifty-five billion, four hundred seven million, seven hundred seventy-four thousand, one hundred sixty-seven".