613581043405440 has 256 divisors, whose sum is σ = 2144759263395840. Its totient is φ = 147968138956800.

The previous prime is 613581043405387. The next prime is 613581043405487. The reversal of 613581043405440 is 44504340185316.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 613581043405440.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72018784 + ... + 80086623.

It is an arithmetic number, because the mean of its divisors is an integer number (8377965872640).

Almost surely, 2^{613581043405440} is an apocalyptic number.

613581043405440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

613581043405440 is an abundant number, since it is smaller than the sum of its proper divisors (1531178219990400).

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

613581043405440 is a wasteful number, since it uses less digits than its factorization.

613581043405440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152105631 (or 152105619 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 48.

The spelling of 613581043405440 in words is "six hundred thirteen trillion, five hundred eighty-one billion, forty-three million, four hundred five thousand, four hundred forty".