315540997641 has 6 divisors (see below), whose sum is σ = 455781441050. Its totient is φ = 210360665088.

The previous prime is 315540997633. The next prime is 315540997663. The reversal of 315540997641 is 146799045513.

315540997641 is a `hidden beast` number, since 3 + 1 + 5 + 540 + 9 + 97 + 6 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 216872764416 + 98668233225 = 465696^2 + 314115^2 .

It is not a de Polignac number, because 315540997641 - 2³ = 315540997633 is a prime.

It is a super-2 number, since 2×315540997641² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315540997141) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 17530055416 + ... + 17530055433.

Almost surely, 2^315540997641 is an apocalyptic number.

It is an amenable number.

315540997641 is a deficient number, since it is larger than the sum of its proper divisors (140240443409).

315540997641 is a wasteful number, since it uses less digits than its factorization.

315540997641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35060110855 (or 35060110852 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The spelling of 315540997641 in words is "three hundred fifteen billion, five hundred forty million, nine hundred ninety-seven thousand, six hundred forty-one".