315665146232242 has 16 divisors (see below), whose sum is σ = 480293763969600. Its totient is φ = 155568401415280.

The previous prime is 315665146232231. The next prime is 315665146232269. The reversal of 315665146232242 is 242232641566513.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 315665146232242.

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, 293588017 + ... + 294661252.

It is an arithmetic number, because the mean of its divisors is an integer number (30018360248100).

Almost surely, 2^{315665146232242} is an apocalyptic number.

315665146232242 is a deficient number, since it is larger than the sum of its proper divisors (164628617737358).

315665146232242 is a wasteful number, since it uses less digits than its factorization.

315665146232242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588253121.

The product of its digits is 12441600, while the sum is 52.

Adding to 315665146232242 its reverse (242232641566513), we get a palindrome (557897787798755).

The spelling of 315665146232242 in words is "three hundred fifteen trillion, six hundred sixty-five billion, one hundred forty-six million, two hundred thirty-two thousand, two hundred forty-two".