671511660733 has 8 divisors (see below), whose sum is σ = 671811887448. Its totient is φ = 671211503424.

The previous prime is 671511660713. The next prime is 671511660751. The reversal of 671511660733 is 337066115176.

It can be written as a sum of positive squares in 4 ways, for example, as 286073080164 + 385438580569 = 534858^2 + 620837^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 671511660733 - 2³⁷ = 534072707261 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 (671511660713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29372535 + ... + 29395387.

It is an arithmetic number, because the mean of its divisors is an integer number (83976485931).

Almost surely, 2^671511660733 is an apocalyptic number.

It is an amenable number.

671511660733 is a deficient number, since it is larger than the sum of its proper divisors (300226715).

671511660733 is a wasteful number, since it uses less digits than its factorization.

671511660733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34703.

The product of its (nonzero) digits is 476280, while the sum is 46.

The spelling of 671511660733 in words is "six hundred seventy-one billion, five hundred eleven million, six hundred sixty thousand, seven hundred thirty-three".