255306916398 has 16 divisors (see below), whose sum is σ = 510619047120. Its totient is φ = 85101436416.

The previous prime is 255306916391. The next prime is 255306916433. The reversal of 255306916398 is 893619603552.

It is a super-2 number, since 2×255306916398² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255306916391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 751608 + ... + 1037076.

It is an arithmetic number, because the mean of its divisors is an integer number (31913690445).

Almost surely, 2^255306916398 is an apocalyptic number.

255306916398 is an abundant number, since it is smaller than the sum of its proper divisors (255312130722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255306916398 is a wasteful number, since it uses less digits than its factorization.

255306916398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434531.

The product of its (nonzero) digits is 10497600, while the sum is 57.

The spelling of 255306916398 in words is "two hundred fifty-five billion, three hundred six million, nine hundred sixteen thousand, three hundred ninety-eight".