611842756321 has 4 divisors (see below), whose sum is σ = 613012628272. Its totient is φ = 610672884372.

The previous prime is 611842756309. The next prime is 611842756339. The reversal of 611842756321 is 123657248116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 611842756321 - 2²⁵ = 611809201889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611842756351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584935191 + ... + 584936236.

It is an arithmetic number, because the mean of its divisors is an integer number (153253157068).

Almost surely, 2^611842756321 is an apocalyptic number.

It is an amenable number.

611842756321 is a deficient number, since it is larger than the sum of its proper divisors (1169871951).

611842756321 is a wasteful number, since it uses less digits than its factorization.

611842756321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169871950.

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

The spelling of 611842756321 in words is "six hundred eleven billion, eight hundred forty-two million, seven hundred fifty-six thousand, three hundred twenty-one".