2315918499840 has 672 divisors, whose sum is σ = 9219094185600. Its totient is φ = 531867893760.

The previous prime is 2315918499737. The next prime is 2315918499883. The reversal of 2315918499840 is 489948195132.

2315918499840 is a `hidden beast` number, since 2 + 3 + 1 + 59 + 18 + 499 + 84 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77030731 + ... + 77060789.

Almost surely, 2^{2315918499840} is an apocalyptic number.

2315918499840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2315918499840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4609547092800).

2315918499840 is an abundant number, since it is smaller than the sum of its proper divisors (6903175685760).

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

2315918499840 is a wasteful number, since it uses less digits than its factorization.

2315918499840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30126 (or 30099 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 63.

The spelling of 2315918499840 in words is "two trillion, three hundred fifteen billion, nine hundred eighteen million, four hundred ninety-nine thousand, eight hundred forty".