61117273211 has 4 divisors (see below), whose sum is σ = 61118265792. Its totient is φ = 61116280632.

The previous prime is 61117273201. The next prime is 61117273253. The reversal of 61117273211 is 11237271116.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61117273211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61117273201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397355 + ... + 529268.

It is an arithmetic number, because the mean of its divisors is an integer number (15279566448).

Almost surely, 2^61117273211 is an apocalyptic number.

61117273211 is a deficient number, since it is larger than the sum of its proper divisors (992581).

61117273211 is an equidigital number, since it uses as much as digits as its factorization.

61117273211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992580.

The product of its digits is 3528, while the sum is 32.

The spelling of 61117273211 in words is "sixty-one billion, one hundred seventeen million, two hundred seventy-three thousand, two hundred eleven".