315154221255 has 40 divisors (see below), whose sum is σ = 565602955632. Its totient is φ = 167885937792.

The previous prime is 315154221241. The next prime is 315154221259. The reversal of 315154221255 is 552122451513.

315154221255 is a `hidden beast` number, since 3 + 1 + 51 + 542 + 2 + 12 + 55 = 666.

It is not a de Polignac number, because 315154221255 - 2⁶ = 315154221191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315154221259) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 106917 + ... + 801086.

Almost surely, 2^315154221255 is an apocalyptic number.

315154221255 is a deficient number, since it is larger than the sum of its proper divisors (250448734377).

315154221255 is an equidigital number, since it uses as much as digits as its factorization.

315154221255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908877 (or 908868 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

Adding to 315154221255 its reverse (552122451513), we get a palindrome (867276672768).

The spelling of 315154221255 in words is "three hundred fifteen billion, one hundred fifty-four million, two hundred twenty-one thousand, two hundred fifty-five".