612849993216 has 80 divisors (see below), whose sum is σ = 1636443063024. Its totient is φ = 203811323904.

The previous prime is 612849993209. The next prime is 612849993289. The reversal of 612849993216 is 612399948216.

It is a super-2 number, since 2×612849993216² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 612849993216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204360 + ... + 1125816.

Almost surely, 2^612849993216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612849993216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (818221531512).

612849993216 is an abundant number, since it is smaller than the sum of its proper divisors (1023593069808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612849993216 is an equidigital number, since it uses as much as digits as its factorization.

612849993216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921911 (or 921895 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 60.

The spelling of 612849993216 in words is "six hundred twelve billion, eight hundred forty-nine million, nine hundred ninety-three thousand, two hundred sixteen".