671264355635 has 4 divisors (see below), whose sum is σ = 805517226768. Its totient is φ = 537011484504.

The previous prime is 671264355599. The next prime is 671264355661. The reversal of 671264355635 is 536553462176.

671264355635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 671264355635 - 2⁸ = 671264355379 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67126435559 + ... + 67126435568.

It is an arithmetic number, because the mean of its divisors is an integer number (201379306692).

Almost surely, 2^671264355635 is an apocalyptic number.

671264355635 is a deficient number, since it is larger than the sum of its proper divisors (134252871133).

671264355635 is a wasteful number, since it uses less digits than its factorization.

671264355635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134252871132.

The product of its digits is 13608000, while the sum is 53.

The spelling of 671264355635 in words is "six hundred seventy-one billion, two hundred sixty-four million, three hundred fifty-five thousand, six hundred thirty-five".