255237343247 has 4 divisors (see below), whose sum is σ = 255254908320. Its totient is φ = 255219778176.

The previous prime is 255237343243. The next prime is 255237343253. The reversal of 255237343247 is 742343732552.

It is a happy number.

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 255237343247 - 2² = 255237343243 is a prime.

It is a super-2 number, since 2×255237343247² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255237343241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8760722 + ... + 8789807.

It is an arithmetic number, because the mean of its divisors is an integer number (63813727080).

Almost surely, 2^255237343247 is an apocalyptic number.

255237343247 is a deficient number, since it is larger than the sum of its proper divisors (17565073).

255237343247 is a wasteful number, since it uses less digits than its factorization.

255237343247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17565072.

The product of its digits is 4233600, while the sum is 47.

The spelling of 255237343247 in words is "two hundred fifty-five billion, two hundred thirty-seven million, three hundred forty-three thousand, two hundred forty-seven".