611606145361 has 8 divisors (see below), whose sum is σ = 612188127144. Its totient is φ = 611024346240.

The previous prime is 611606145341. The next prime is 611606145389. The reversal of 611606145361 is 163541606116.

It can be written as a sum of positive squares in 4 ways, for example, as 319270201600 + 292335943761 = 565040^2 + 540681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 611606145361 - 2²³ = 611597756753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611606145301) 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 7 ways as a sum of consecutive naturals, for example, 7192851 + ... + 7277383.

It is an arithmetic number, because the mean of its divisors is an integer number (76523515893).

Almost surely, 2^611606145361 is an apocalyptic number.

It is an amenable number.

611606145361 is a deficient number, since it is larger than the sum of its proper divisors (581981783).

611606145361 is a wasteful number, since it uses less digits than its factorization.

611606145361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91331.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 611606145361 in words is "six hundred eleven billion, six hundred six million, one hundred forty-five thousand, three hundred sixty-one".