617116350371881 has 2 divisors, whose sum is σ = 617116350371882. Its totient is φ = 617116350371880.

The previous prime is 617116350371861. The next prime is 617116350371893. The reversal of 617116350371881 is 188173053611716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 465907519481881 + 151208830890000 = 21584891^2 + 12296700^2 .

It is a cyclic number.

It is not a de Polignac number, because 617116350371881 - 2²⁵ = 617116316817449 is a prime.

It is a super-2 number, since 2×617116350371881² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (617116350371861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308558175185940 + 308558175185941.

It is an arithmetic number, because the mean of its divisors is an integer number (308558175185941).

Almost surely, 2^{617116350371881} is an apocalyptic number.

It is an amenable number.

617116350371881 is a deficient number, since it is larger than the sum of its proper divisors (1).

617116350371881 is an equidigital number, since it uses as much as digits as its factorization.

617116350371881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 58.

The spelling of 617116350371881 in words is "six hundred seventeen trillion, one hundred sixteen billion, three hundred fifty million, three hundred seventy-one thousand, eight hundred eighty-one".