611678456173 has 2 divisors, whose sum is σ = 611678456174. Its totient is φ = 611678456172.

The previous prime is 611678456161. The next prime is 611678456231. The reversal of 611678456173 is 371654876116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 577215504009 + 34462952164 = 759747^2 + 185642^2 .

It is a cyclic number.

It is not a de Polignac number, because 611678456173 - 2¹³ = 611678447981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611678456143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305839228086 + 305839228087.

It is an arithmetic number, because the mean of its divisors is an integer number (305839228087).

Almost surely, 2^611678456173 is an apocalyptic number.

It is an amenable number.

611678456173 is a deficient number, since it is larger than the sum of its proper divisors (1).

611678456173 is an equidigital number, since it uses as much as digits as its factorization.

611678456173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 55.

The spelling of 611678456173 in words is "six hundred eleven billion, six hundred seventy-eight million, four hundred fifty-six thousand, one hundred seventy-three".