617859489371 has 4 divisors (see below), whose sum is σ = 619846176144. Its totient is φ = 615872802600.

The previous prime is 617859489347. The next prime is 617859489397. The reversal of 617859489371 is 173984958716.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 617859489371 - 2²⁶ = 617792380507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (617859489271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993342920 + ... + 993343541.

It is an arithmetic number, because the mean of its divisors is an integer number (154961544036).

Almost surely, 2^617859489371 is an apocalyptic number.

617859489371 is a deficient number, since it is larger than the sum of its proper divisors (1986686773).

617859489371 is a wasteful number, since it uses less digits than its factorization.

617859489371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986686772.

The product of its digits is 91445760, while the sum is 68.

The spelling of 617859489371 in words is "six hundred seventeen billion, eight hundred fifty-nine million, four hundred eighty-nine thousand, three hundred seventy-one".