617072052040 has 16 divisors (see below), whose sum is σ = 1388412117180. Its totient is φ = 246828820800.

The previous prime is 617072052013. The next prime is 617072052043. The reversal of 617072052040 is 40250270716.

It can be written as a sum of positive squares in 2 ways, for example, as 608777578564 + 8294473476 = 780242^2 + 91074^2 .

It is a junction number, because it is equal to n+sod(n) for n = 617072051987 and 617072052005.

It is not an unprimeable number, because it can be changed into a prime (617072052043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7713400611 + ... + 7713400690.

Almost surely, 2^617072052040 is an apocalyptic number.

It is an amenable number.

617072052040 is an abundant number, since it is smaller than the sum of its proper divisors (771340065140).

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

617072052040 is a wasteful number, since it uses less digits than its factorization.

617072052040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15426801312 (or 15426801308 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 617072052040 in words is "six hundred seventeen billion, seventy-two million, fifty-two thousand, forty".