671081262061 has 16 divisors (see below), whose sum is σ = 779998118400. Its totient is φ = 565427656368.

The previous prime is 671081262041. The next prime is 671081262067. The reversal of 671081262061 is 160262180176.

It is a cyclic number.

It is not a de Polignac number, because 671081262061 - 2¹⁹ = 671080737773 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 (671081262067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8121010 + ... + 8203228.

It is an arithmetic number, because the mean of its divisors is an integer number (48749882400).

Almost surely, 2^671081262061 is an apocalyptic number.

It is an amenable number.

671081262061 is a deficient number, since it is larger than the sum of its proper divisors (108916856339).

671081262061 is a wasteful number, since it uses less digits than its factorization.

671081262061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102048.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 671081262061 in words is "six hundred seventy-one billion, eighty-one million, two hundred sixty-two thousand, sixty-one".