315633643432 has 8 divisors (see below), whose sum is σ = 591813081450. Its totient is φ = 157816821712.

The previous prime is 315633643421. The next prime is 315633643441. The reversal of 315633643432 is 234346336513.

It can be written as a sum of positive squares in only one way, i.e., 195386984676 + 120246658756 = 442026^2 + 346766^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19727102707 + ... + 19727102722.

Almost surely, 2^315633643432 is an apocalyptic number.

It is an amenable number.

315633643432 is a deficient number, since it is larger than the sum of its proper divisors (276179438018).

315633643432 is a wasteful number, since it uses less digits than its factorization.

315633643432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39454205435 (or 39454205431 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 43.

Adding to 315633643432 its reverse (234346336513), we get a palindrome (549979979945).

The spelling of 315633643432 in words is "three hundred fifteen billion, six hundred thirty-three million, six hundred forty-three thousand, four hundred thirty-two".