612161546220145 has 4 divisors (see below), whose sum is σ = 734593855464180. Its totient is φ = 489729236976112.

The previous prime is 612161546220097. The next prime is 612161546220193. The reversal of 612161546220145 is 541022645161216.

612161546220145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (612161546220097) and next prime (612161546220193).

It can be written as a sum of positive squares in 2 ways, for example, as 439769084131584 + 172392462088561 = 20970672^2 + 13129831^2 .

It is a cyclic number.

It is not a de Polignac number, because 612161546220145 - 2⁹ = 612161546219633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 612161546220095 and 612161546220104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61216154622010 + ... + 61216154622019.

It is an arithmetic number, because the mean of its divisors is an integer number (183648463866045).

Almost surely, 2^{612161546220145} is an apocalyptic number.

It is an amenable number.

612161546220145 is a deficient number, since it is larger than the sum of its proper divisors (122432309244035).

612161546220145 is a wasteful number, since it uses less digits than its factorization.

612161546220145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122432309244034.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 612161546220145 in words is "six hundred twelve trillion, one hundred sixty-one billion, five hundred forty-six million, two hundred twenty thousand, one hundred forty-five".