255344402643 has 32 divisors (see below), whose sum is σ = 393655375872. Its totient is φ = 145503705600.

The previous prime is 255344402623. The next prime is 255344402699. The reversal of 255344402643 is 346204443552.

It is a happy number.

It is not a de Polignac number, because 255344402643 - 2¹⁶ = 255344337107 is a prime.

It is a super-2 number, since 2×255344402643² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255344402595 and 255344402604.

It is not an unprimeable number, because it can be changed into a prime (255344402623) 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, 326305 + ... + 785597.

It is an arithmetic number, because the mean of its divisors is an integer number (12301730496).

Almost surely, 2^255344402643 is an apocalyptic number.

255344402643 is a deficient number, since it is larger than the sum of its proper divisors (138310973229).

255344402643 is a wasteful number, since it uses less digits than its factorization.

255344402643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460315.

The product of its (nonzero) digits is 1382400, while the sum is 42.

The spelling of 255344402643 in words is "two hundred fifty-five billion, three hundred forty-four million, four hundred two thousand, six hundred forty-three".