255379351639 has 4 divisors (see below), whose sum is σ = 255387041856. Its totient is φ = 255371661424.

The previous prime is 255379351547. The next prime is 255379351663. The reversal of 255379351639 is 936153973552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255379351639 - 2¹⁷ = 255379220567 is a prime.

It is a super-2 number, since 2×255379351639² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255379331639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3795079 + ... + 3861784.

It is an arithmetic number, because the mean of its divisors is an integer number (63846760464).

Almost surely, 2^255379351639 is an apocalyptic number.

255379351639 is a deficient number, since it is larger than the sum of its proper divisors (7690217).

255379351639 is an equidigital number, since it uses as much as digits as its factorization.

255379351639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7690216.

The product of its digits is 22963500, while the sum is 58.

The spelling of 255379351639 in words is "two hundred fifty-five billion, three hundred seventy-nine million, three hundred fifty-one thousand, six hundred thirty-nine".