913640216580 has 384 divisors, whose sum is σ = 3501269237760. Its totient is φ = 192609031680.

The previous prime is 913640216549. The next prime is 913640216597. The reversal of 913640216580 is 85612046319.

913640216580 is a `hidden beast` number, since 9 + 1 + 3 + 6 + 40 + 21 + 6 + 580 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 65201775 + ... + 65215785.

It is an arithmetic number, because the mean of its divisors is an integer number (9117888640).

Almost surely, 2^913640216580 is an apocalyptic number.

913640216580 is a gapful number since it is divisible by the number (90) 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 913640216580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1750634618880).

913640216580 is an abundant number, since it is smaller than the sum of its proper divisors (2587629021180).

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

913640216580 is a wasteful number, since it uses less digits than its factorization.

913640216580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15376 (or 15368 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 913640216580 in words is "nine hundred thirteen billion, six hundred forty million, two hundred sixteen thousand, five hundred eighty".