671511676847 has 16 divisors (see below), whose sum is σ = 743761896192. Its totient is φ = 601135360320.

The previous prime is 671511676819. The next prime is 671511676861. The reversal of 671511676847 is 748676115176.

It is not a de Polignac number, because 671511676847 - 2¹² = 671511672751 is a prime.

It is a super-2 number, since 2×671511676847² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671511676897) 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, 1882598 + ... + 2210700.

It is an arithmetic number, because the mean of its divisors is an integer number (46485118512).

Almost surely, 2^671511676847 is an apocalyptic number.

671511676847 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

671511676847 is a deficient number, since it is larger than the sum of its proper divisors (72250219345).

671511676847 is a wasteful number, since it uses less digits than its factorization.

671511676847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330958.

The product of its digits is 11854080, while the sum is 59.

The spelling of 671511676847 in words is "six hundred seventy-one billion, five hundred eleven million, six hundred seventy-six thousand, eight hundred forty-seven".