916655556619 has 4 divisors (see below), whose sum is σ = 999987879960. Its totient is φ = 833323233280.

The previous prime is 916655556587. The next prime is 916655556623.

916655556619 is nontrivially palindromic in base 10.

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 916655556619 - 2⁵ = 916655556587 is a prime.

It is a super-2 number, since 2×916655556619² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (916655556679) 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, 41666161654 + ... + 41666161675.

It is an arithmetic number, because the mean of its divisors is an integer number (249996969990).

Almost surely, 2^916655556619 is an apocalyptic number.

916655556619 is a deficient number, since it is larger than the sum of its proper divisors (83332323341).

916655556619 is a wasteful number, since it uses less digits than its factorization.

916655556619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83332323340.

The product of its digits is 65610000, while the sum is 64.

The spelling of 916655556619 in words is "nine hundred sixteen billion, six hundred fifty-five million, five hundred fifty-six thousand, six hundred nineteen".