611220210145 has 8 divisors (see below), whose sum is σ = 745488256680. Its totient is φ = 480960165120.

The previous prime is 611220210127. The next prime is 611220210151. The reversal of 611220210145 is 541012022116.

It can be written as a sum of positive squares in 4 ways, for example, as 33010529344 + 578209680801 = 181688^2 + 760401^2 .

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

It is not a de Polignac number, because 611220210145 - 2²⁵ = 611186655713 is a prime.

It is an unprimeable number.

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, 1002000040 + ... + 1002000649.

It is an arithmetic number, because the mean of its divisors is an integer number (93186032085).

Almost surely, 2^611220210145 is an apocalyptic number.

It is an amenable number.

611220210145 is a deficient number, since it is larger than the sum of its proper divisors (134268046535).

611220210145 is a wasteful number, since it uses less digits than its factorization.

611220210145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004000755.

The product of its (nonzero) digits is 960, while the sum is 25.

The spelling of 611220210145 in words is "six hundred eleven billion, two hundred twenty million, two hundred ten thousand, one hundred forty-five".