1616537226317 has 4 divisors (see below), whose sum is σ = 1740886243740.
Its totient is φ = 1492188208896.
The previous prime is 1616537226263. The next prime is 1616537226319. The reversal of 1616537226317 is 7136227356161.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 831778656361 + 784758569956 = 912019^2 + 885866^2
It is a cyclic number.
It is not a de Polignac number, because 1616537226317 - 26 = 1616537226253 is a prime.
It is a super-2 number, since 2×16165372263172 (a number of 25 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1616537226319) 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, 62174508692 + ... + 62174508717.
It is an arithmetic number, because the mean of its divisors is an integer number (435221560935).
Almost surely, 21616537226317 is an apocalyptic number.
It is an amenable number.
1616537226317 is a deficient number, since it is larger than the sum of its proper divisors (124349017423).
1616537226317 is a wasteful number, since it uses less digits than its factorization.
1616537226317 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 124349017422.
The product of its digits is 1905120, while the sum is 50.
The spelling of 1616537226317 in words is "one trillion, six hundred sixteen billion, five hundred thirty-seven million, two hundred twenty-six thousand, three hundred seventeen".