316161901640 has 64 divisors (see below), whose sum is σ = 811148430960. Its totient is φ = 109869834240.

The previous prime is 316161901633. The next prime is 316161901667. The reversal of 316161901640 is 46109161613.

It can be written as a sum of positive squares in 8 ways, for example, as 57795044836 + 258366856804 = 240406^2 + 508298^2 .

It is a junction number, because it is equal to n+sod(n) for n = 316161901594 and 316161901603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17873621 + ... + 17891300.

Almost surely, 2^316161901640 is an apocalyptic number.

It is an amenable number.

316161901640 is an abundant number, since it is smaller than the sum of its proper divisors (494986529320).

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

316161901640 is a wasteful number, since it uses less digits than its factorization.

316161901640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35764962 (or 35764958 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 316161901640 in words is "three hundred sixteen billion, one hundred sixty-one million, nine hundred one thousand, six hundred forty".