611042017871 has 2 divisors, whose sum is σ = 611042017872. Its totient is φ = 611042017870.

The previous prime is 611042017841. The next prime is 611042017907. The reversal of 611042017871 is 178710240116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 611042017871 - 2¹⁰ = 611042016847 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611042017841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305521008935 + 305521008936.

It is an arithmetic number, because the mean of its divisors is an integer number (305521008936).

Almost surely, 2^611042017871 is an apocalyptic number.

611042017871 is a deficient number, since it is larger than the sum of its proper divisors (1).

611042017871 is an equidigital number, since it uses as much as digits as its factorization.

611042017871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 38.

Adding to 611042017871 its reverse (178710240116), we get a palindrome (789752257987).

The spelling of 611042017871 in words is "six hundred eleven billion, forty-two million, seventeen thousand, eight hundred seventy-one".