612176361889 has 9 divisors (see below), whose sum is σ = 613997745753. Its totient is φ = 610360372032.

The previous prime is 612176361877. The next prime is 612176361911. The reversal of 612176361889 is 988163671216.

The square root of 612176361889 is 782417.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 378686390625 + 233489971264 = 615375^2 + 483208^2 .

It is not a de Polignac number, because 612176361889 - 2¹³ = 612176353697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612176311889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 320007597 + ... + 320009509.

Almost surely, 2^612176361889 is an apocalyptic number.

612176361889 is the 782417-th square number.

612176361889 is the 391209-th centered octagonal number.

It is an amenable number.

612176361889 is a deficient number, since it is larger than the sum of its proper divisors (1821383864).

612176361889 is an frugal number, since it uses more digits than its factorization.

612176361889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644 (or 2322 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The spelling of 612176361889 in words is "six hundred twelve billion, one hundred seventy-six million, three hundred sixty-one thousand, eight hundred eighty-nine".