611763425281 has 4 divisors (see below), whose sum is σ = 614143827972. Its totient is φ = 609383022592.

The previous prime is 611763425267. The next prime is 611763425303. The reversal of 611763425281 is 182524367116.

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 350114807025 + 261648618256 = 591705^2 + 511516^2 .

It is a cyclic number.

It is not a de Polignac number, because 611763425281 - 2¹⁷ = 611763294209 is a prime.

It is a super-2 number, since 2×611763425281² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611763425381) 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, 1190200960 + ... + 1190201473.

It is an arithmetic number, because the mean of its divisors is an integer number (153535956993).

Almost surely, 2^611763425281 is an apocalyptic number.

It is an amenable number.

611763425281 is a deficient number, since it is larger than the sum of its proper divisors (2380402691).

611763425281 is a wasteful number, since it uses less digits than its factorization.

611763425281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380402690.

The product of its digits is 483840, while the sum is 46.

The spelling of 611763425281 in words is "six hundred eleven billion, seven hundred sixty-three million, four hundred twenty-five thousand, two hundred eighty-one".