671496145061 has 16 divisors (see below), whose sum is σ = 767990602368. Its totient is φ = 575143483200.

The previous prime is 671496145031. The next prime is 671496145079. The reversal of 671496145061 is 160541694176.

It is a cyclic number.

It is not a de Polignac number, because 671496145061 - 2¹⁸ = 671495882917 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 (671496145031) 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, 78322571 + ... + 78331143.

It is an arithmetic number, because the mean of its divisors is an integer number (47999412648).

Almost surely, 2^671496145061 is an apocalyptic number.

It is an amenable number.

671496145061 is a deficient number, since it is larger than the sum of its proper divisors (96494457307).

671496145061 is a wasteful number, since it uses less digits than its factorization.

671496145061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15532.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 671496145061 in words is "six hundred seventy-one billion, four hundred ninety-six million, one hundred forty-five thousand, sixty-one".