671555604471 has 16 divisors (see below), whose sum is σ = 916275089664. Its totient is φ = 437270932224.

The previous prime is 671555604451. The next prime is 671555604529. The reversal of 671555604471 is 174406555176.

It is not a de Polignac number, because 671555604471 - 2²¹ = 671553507319 is a prime.

It is a super-3 number, since 3×671555604471³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671555604451) 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, 2827975 + ... + 3056231.

It is an arithmetic number, because the mean of its divisors is an integer number (57267193104).

Almost surely, 2^671555604471 is an apocalyptic number.

671555604471 is a deficient number, since it is larger than the sum of its proper divisors (244719485193).

671555604471 is a wasteful number, since it uses less digits than its factorization.

671555604471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251110.

The product of its (nonzero) digits is 3528000, while the sum is 51.

The spelling of 671555604471 in words is "six hundred seventy-one billion, five hundred fifty-five million, six hundred four thousand, four hundred seventy-one".