315222522440 has 64 divisors (see below), whose sum is σ = 858252931200. Its totient is φ = 101718862848.

The previous prime is 315222522431. The next prime is 315222522479. The reversal of 315222522440 is 44225222513.

It is a junction number, because it is equal to n+sod(n) for n = 315222522397 and 315222522406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33106850 + ... + 33116369.

It is an arithmetic number, because the mean of its divisors is an integer number (13410202050).

Almost surely, 2^315222522440 is an apocalyptic number.

It is an amenable number.

315222522440 is an abundant number, since it is smaller than the sum of its proper divisors (543030408760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315222522440 is a wasteful number, since it uses less digits than its factorization.

315222522440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66223254 (or 66223250 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 315222522440 its reverse (44225222513), we get a palindrome (359447744953).

The spelling of 315222522440 in words is "three hundred fifteen billion, two hundred twenty-two million, five hundred twenty-two thousand, four hundred forty".