616430661663 has 8 divisors (see below), whose sum is σ = 835381443376. Its totient is φ = 404216827200.

The previous prime is 616430661631. The next prime is 616430661683. The reversal of 616430661663 is 366166034616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 616430661663 - 2⁵ = 616430661631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616430661683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684236598 + ... + 1684236963.

It is an arithmetic number, because the mean of its divisors is an integer number (104422680422).

Almost surely, 2^616430661663 is an apocalyptic number.

616430661663 is a deficient number, since it is larger than the sum of its proper divisors (218950781713).

616430661663 is a wasteful number, since it uses less digits than its factorization.

616430661663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368473625.

The product of its (nonzero) digits is 1679616, while the sum is 48.

The spelling of 616430661663 in words is "six hundred sixteen billion, four hundred thirty million, six hundred sixty-one thousand, six hundred sixty-three".