671226162077 has 16 divisors (see below), whose sum is σ = 682487190000. Its totient is φ = 660066140160.

The previous prime is 671226162073. The next prime is 671226162143. The reversal of 671226162077 is 770261622176.

It can be written as a sum of positive squares in 8 ways, for example, as 49432407556 + 621793754521 = 222334^2 + 788539^2 .

It is a cyclic number.

It is not a de Polignac number, because 671226162077 - 2² = 671226162073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671226162073) 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 in 15 ways as a sum of consecutive naturals, for example, 10464299 + ... + 10528247.

It is an arithmetic number, because the mean of its divisors is an integer number (42655449375).

Almost surely, 2^671226162077 is an apocalyptic number.

It is an amenable number.

671226162077 is a deficient number, since it is larger than the sum of its proper divisors (11261027923).

671226162077 is a wasteful number, since it uses less digits than its factorization.

671226162077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64736.

The product of its (nonzero) digits is 592704, while the sum is 47.

The spelling of 671226162077 in words is "six hundred seventy-one billion, two hundred twenty-six million, one hundred sixty-two thousand, seventy-seven".