612228018830761 has 2 divisors, whose sum is σ = 612228018830762. Its totient is φ = 612228018830760.

The previous prime is 612228018830689. The next prime is 612228018830773. The reversal of 612228018830761 is 167038810822216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 526185976297536 + 86042042533225 = 22938744^2 + 9275885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612228018830761 is a prime.

It is a super-2 number, since 2×612228018830761² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (612228018830261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306114009415380 + 306114009415381.

It is an arithmetic number, because the mean of its divisors is an integer number (306114009415381).

Almost surely, 2^{612228018830761} is an apocalyptic number.

It is an amenable number.

612228018830761 is a deficient number, since it is larger than the sum of its proper divisors (1).

612228018830761 is an equidigital number, since it uses as much as digits as its factorization.

612228018830761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 612228018830761 in words is "six hundred twelve trillion, two hundred twenty-eight billion, eighteen million, eight hundred thirty thousand, seven hundred sixty-one".