613323909318920 has 32 divisors (see below), whose sum is σ = 1461154019261400. Its totient is φ = 230898412919808.

The previous prime is 613323909318893. The next prime is 613323909318973. The reversal of 613323909318920 is 29813909323316.

It can be written as a sum of positive squares in 4 ways, for example, as 469964906398276 + 143359002920644 = 21678674^2 + 11973262^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 613323909318920.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450973462055 + ... + 450973463414.

Almost surely, 2^{613323909318920} is an apocalyptic number.

It is an amenable number.

613323909318920 is an abundant number, since it is smaller than the sum of its proper divisors (847830109942480).

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

613323909318920 is a wasteful number, since it uses less digits than its factorization.

613323909318920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901946925497 (or 901946925493 counting only the distinct ones).

The product of its (nonzero) digits is 11337408, while the sum is 59.

The spelling of 613323909318920 in words is "six hundred thirteen trillion, three hundred twenty-three billion, nine hundred nine million, three hundred eighteen thousand, nine hundred twenty".