612775177121 has 4 divisors (see below), whose sum is σ = 612777501252. Its totient is φ = 612772852992.

The previous prime is 612775177111. The next prime is 612775177129. The reversal of 612775177121 is 121771577216.

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 315210382096 + 297564795025 = 561436^2 + 545495^2 .

It is a cyclic number.

It is not a de Polignac number, because 612775177121 - 2¹⁸ = 612774914977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (612775177129) 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, 707240 + ... + 1313673.

It is an arithmetic number, because the mean of its divisors is an integer number (153194375313).

Almost surely, 2^612775177121 is an apocalyptic number.

It is an amenable number.

612775177121 is a deficient number, since it is larger than the sum of its proper divisors (2324131).

612775177121 is a wasteful number, since it uses less digits than its factorization.

612775177121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324130.

The product of its digits is 288120, while the sum is 47.

The spelling of 612775177121 in words is "six hundred twelve billion, seven hundred seventy-five million, one hundred seventy-seven thousand, one hundred twenty-one".