612127308213 has 12 divisors (see below), whose sum is σ = 887008762380. Its totient is φ = 406781084736.

The previous prime is 612127308203. The next prime is 612127308253. The reversal of 612127308213 is 312803721216.

612127308213 is a `hidden beast` number, since 6 + 12 + 127 + 308 + 213 = 666.

612127308213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5345510769 + 606781797444 = 73113^2 + 778962^2 .

It is not a de Polignac number, because 612127308213 - 2¹⁷ = 612127177141 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612127308203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108645978 + ... + 108651611.

It is an arithmetic number, because the mean of its divisors is an integer number (73917396865).

Almost surely, 2^612127308213 is an apocalyptic number.

It is an amenable number.

612127308213 is a deficient number, since it is larger than the sum of its proper divisors (274881454167).

612127308213 is a wasteful number, since it uses less digits than its factorization.

612127308213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217297908 (or 217297905 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 612127308213 in words is "six hundred twelve billion, one hundred twenty-seven million, three hundred eight thousand, two hundred thirteen".