617138766433 has 16 divisors (see below), whose sum is σ = 766371696640. Its totient is φ = 484969582800.

The previous prime is 617138766379. The next prime is 617138766467. The reversal of 617138766433 is 334667831716.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-617138766433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (617138766493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74836863 + ... + 74845108.

It is an arithmetic number, because the mean of its divisors is an integer number (47898231040).

Almost surely, 2^617138766433 is an apocalyptic number.

It is an amenable number.

617138766433 is a deficient number, since it is larger than the sum of its proper divisors (149232930207).

617138766433 is a wasteful number, since it uses less digits than its factorization.

617138766433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149682028.

The product of its digits is 9144576, while the sum is 55.

The spelling of 617138766433 in words is "six hundred seventeen billion, one hundred thirty-eight million, seven hundred sixty-six thousand, four hundred thirty-three".