315985591120 has 40 divisors (see below), whose sum is σ = 734948574120. Its totient is φ = 126345707520.

The previous prime is 315985591091. The next prime is 315985591127. The reversal of 315985591120 is 21195589513.

It can be written as a sum of positive squares in 4 ways, for example, as 653927184 + 315331663936 = 25572^2 + 561544^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315985591127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548241 + ... + 965680.

It is an arithmetic number, because the mean of its divisors is an integer number (18373714353).

Almost surely, 2^315985591120 is an apocalyptic number.

It is an amenable number.

315985591120 is an abundant number, since it is smaller than the sum of its proper divisors (418962983000).

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

315985591120 is a wasteful number, since it uses less digits than its factorization.

315985591120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516543 (or 1516537 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 49.

The spelling of 315985591120 in words is "three hundred fifteen billion, nine hundred eighty-five million, five hundred ninety-one thousand, one hundred twenty".