617381859037 has 2 divisors, whose sum is σ = 617381859038. Its totient is φ = 617381859036.

The previous prime is 617381858987. The next prime is 617381859041. The reversal of 617381859037 is 730958183716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495744136281 + 121637722756 = 704091^2 + 348766^2 .

It is a cyclic number.

It is not a de Polignac number, because 617381859037 - 2⁷ = 617381858909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (617381853037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308690929518 + 308690929519.

It is an arithmetic number, because the mean of its divisors is an integer number (308690929519).

Almost surely, 2^617381859037 is an apocalyptic number.

It is an amenable number.

617381859037 is a deficient number, since it is larger than the sum of its proper divisors (1).

617381859037 is an equidigital number, since it uses as much as digits as its factorization.

617381859037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 58.

The spelling of 617381859037 in words is "six hundred seventeen billion, three hundred eighty-one million, eight hundred fifty-nine thousand, thirty-seven".