671367227557 has 16 divisors (see below), whose sum is σ = 754526626560. Its totient is φ = 592715832192.

The previous prime is 671367227543. The next prime is 671367227591. The reversal of 671367227557 is 755722763176.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671367227557 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 (671367227257) 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, 2806008 + ... + 3035854.

It is an arithmetic number, because the mean of its divisors is an integer number (47157914160).

Almost surely, 2^671367227557 is an apocalyptic number.

It is an amenable number.

671367227557 is a deficient number, since it is larger than the sum of its proper divisors (83159399003).

671367227557 is a wasteful number, since it uses less digits than its factorization.

671367227557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239652.

The product of its digits is 25930800, while the sum is 58.

The spelling of 671367227557 in words is "six hundred seventy-one billion, three hundred sixty-seven million, two hundred twenty-seven thousand, five hundred fifty-seven".