617742164321 has 16 divisors (see below), whose sum is σ = 643624869888. Its totient is φ = 592236825600.

The previous prime is 617742164297. The next prime is 617742164359. The reversal of 617742164321 is 123461247716.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-617742164321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (617742164381) 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 15 ways as a sum of consecutive naturals, for example, 7353065 + ... + 7436601.

It is an arithmetic number, because the mean of its divisors is an integer number (40226554368).

Almost surely, 2^617742164321 is an apocalyptic number.

It is an amenable number.

617742164321 is a deficient number, since it is larger than the sum of its proper divisors (25882705567).

617742164321 is a wasteful number, since it uses less digits than its factorization.

617742164321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85792.

The product of its digits is 338688, while the sum is 44.

The spelling of 617742164321 in words is "six hundred seventeen billion, seven hundred forty-two million, one hundred sixty-four thousand, three hundred twenty-one".