612258677809 has 4 divisors (see below), whose sum is σ = 612305654004. Its totient is φ = 612211701616.

The previous prime is 612258677773. The next prime is 612258677819. The reversal of 612258677809 is 908776852216.

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 171150172209 + 441108505600 = 413703^2 + 664160^2 .

It is a cyclic number.

It is not a de Polignac number, because 612258677809 - 2²¹ = 612256580657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612258677819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23468542 + ... + 23494615.

It is an arithmetic number, because the mean of its divisors is an integer number (153076413501).

Almost surely, 2^612258677809 is an apocalyptic number.

It is an amenable number.

612258677809 is a deficient number, since it is larger than the sum of its proper divisors (46976195).

612258677809 is a wasteful number, since it uses less digits than its factorization.

612258677809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46976194.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 612258677809 in words is "six hundred twelve billion, two hundred fifty-eight million, six hundred seventy-seven thousand, eight hundred nine".