255331440221515 has 8 divisors (see below), whose sum is σ = 350168832303840. Its totient is φ = 175084416151872.

The previous prime is 255331440221503. The next prime is 255331440221531. The reversal of 255331440221515 is 515122044133552.

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

It is a cyclic number.

It is not a de Polignac number, because 255331440221515 - 2¹³ = 255331440213323 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3647592003130 + ... + 3647592003199.

It is an arithmetic number, because the mean of its divisors is an integer number (43771104037980).

Almost surely, 2^{255331440221515} is an apocalyptic number.

255331440221515 is a deficient number, since it is larger than the sum of its proper divisors (94837392082325).

255331440221515 is an equidigital number, since it uses as much as digits as its factorization.

255331440221515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7295184006341.

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 255331440221515 in words is "two hundred fifty-five trillion, three hundred thirty-one billion, four hundred forty million, two hundred twenty-one thousand, five hundred fifteen".