616711399217 has 4 divisors (see below), whose sum is σ = 617446455360. Its totient is φ = 615976343076.

The previous prime is 616711399201. The next prime is 616711399237. The reversal of 616711399217 is 712993117616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 616711399217 - 2⁴ = 616711399201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616711399237) 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, 367526813 + ... + 367528490.

It is an arithmetic number, because the mean of its divisors is an integer number (154361613840).

Almost surely, 2^616711399217 is an apocalyptic number.

It is an amenable number.

616711399217 is a deficient number, since it is larger than the sum of its proper divisors (735056143).

616711399217 is an equidigital number, since it uses as much as digits as its factorization.

616711399217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735056142.

The product of its digits is 857304, while the sum is 53.

The spelling of 616711399217 in words is "six hundred sixteen billion, seven hundred eleven million, three hundred ninety-nine thousand, two hundred seventeen".