612394493217 has 8 divisors (see below), whose sum is σ = 879335682624. Its totient is φ = 376858149648.

The previous prime is 612394493209. The next prime is 612394493219. The reversal of 612394493217 is 712394493216.

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

It is not a de Polignac number, because 612394493217 - 2³ = 612394493209 is a prime.

It is a super-3 number, since 3×612394493217³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 612394493217.

It is not an unprimeable number, because it can be changed into a prime (612394493219) 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, 7851211413 + ... + 7851211490.

It is an arithmetic number, because the mean of its divisors is an integer number (109916960328).

Almost surely, 2^612394493217 is an apocalyptic number.

It is an amenable number.

612394493217 is a deficient number, since it is larger than the sum of its proper divisors (266941189407).

612394493217 is a wasteful number, since it uses less digits than its factorization.

612394493217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15702422919.

The product of its digits is 1959552, while the sum is 51.

Subtracting 612394493217 from its reverse (712394493216), we obtain a palindrome (99999999999).

The spelling of 612394493217 in words is "six hundred twelve billion, three hundred ninety-four million, four hundred ninety-three thousand, two hundred seventeen".