681176476511 has 2 divisors, whose sum is σ = 681176476512. Its totient is φ = 681176476510.

The previous prime is 681176476499. The next prime is 681176476529. The reversal of 681176476511 is 115674671186.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-681176476511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681176476411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340588238255 + 340588238256.

It is an arithmetic number, because the mean of its divisors is an integer number (340588238256).

Almost surely, 2^681176476511 is an apocalyptic number.

681176476511 is a deficient number, since it is larger than the sum of its proper divisors (1).

681176476511 is an equidigital number, since it uses as much as digits as its factorization.

681176476511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 53.

The spelling of 681176476511 in words is "six hundred eighty-one billion, one hundred seventy-six million, four hundred seventy-six thousand, five hundred eleven".