671076446261 has 4 divisors (see below), whose sum is σ = 722697711372. Its totient is φ = 619455181152.

The previous prime is 671076446251. The next prime is 671076446279. The reversal of 671076446261 is 162644670176.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43012271236 + 628064175025 = 207394^2 + 792505^2 .

It is a cyclic number.

It is not a de Polignac number, because 671076446261 - 2⁶ = 671076446197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671076446251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25810632536 + ... + 25810632561.

It is an arithmetic number, because the mean of its divisors is an integer number (180674427843).

Almost surely, 2^671076446261 is an apocalyptic number.

It is an amenable number.

671076446261 is a deficient number, since it is larger than the sum of its proper divisors (51621265111).

671076446261 is a wasteful number, since it uses less digits than its factorization.

671076446261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51621265110.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 671076446261 in words is "six hundred seventy-one billion, seventy-six million, four hundred forty-six thousand, two hundred sixty-one".