255680666715 has 8 divisors (see below), whose sum is σ = 409089066768. Its totient is φ = 136363022240.

The previous prime is 255680666713. The next prime is 255680666741. The reversal of 255680666715 is 517666086552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 255680666715 - 2¹ = 255680666713 is a prime.

It is a super-3 number, since 3×255680666715³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (255680666711) 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, 8522688876 + ... + 8522688905.

It is an arithmetic number, because the mean of its divisors is an integer number (51136133346).

Almost surely, 2^255680666715 is an apocalyptic number.

255680666715 is a deficient number, since it is larger than the sum of its proper divisors (153408400053).

255680666715 is a wasteful number, since it uses less digits than its factorization.

255680666715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17045377789.

The product of its (nonzero) digits is 18144000, while the sum is 57.

The spelling of 255680666715 in words is "two hundred fifty-five billion, six hundred eighty million, six hundred sixty-six thousand, seven hundred fifteen".