315845315845 has 32 divisors (see below), whose sum is σ = 386023528800. Its totient is φ = 248054400000.

The previous prime is 315845315837. The next prime is 315845315861. The reversal of 315845315845 is 548513548513.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 2959468801 + 312885847044 = 54401^2 + 559362^2 .

It is not a de Polignac number, because 315845315845 - 2³ = 315845315837 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 315845315792 and 315845315801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31895395 + ... + 31905295.

It is an arithmetic number, because the mean of its divisors is an integer number (12063235275).

Almost surely, 2^315845315845 is an apocalyptic number.

It is an amenable number.

315845315845 is a deficient number, since it is larger than the sum of its proper divisors (70178212955).

315845315845 is a wasteful number, since it uses less digits than its factorization.

315845315845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10537.

The product of its digits is 5760000, while the sum is 52.

The spelling of 315845315845 in words is "three hundred fifteen billion, eight hundred forty-five million, three hundred fifteen thousand, eight hundred forty-five".