671551658323 has 16 divisors (see below), whose sum is σ = 840534024960. Its totient is φ = 522331850016.

The previous prime is 671551658321. The next prime is 671551658369. The reversal of 671551658323 is 323856155176.

671551658323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 671551658323 - 2¹ = 671551658321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671551658321) 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, 62534365 + ... + 62545102.

It is an arithmetic number, because the mean of its divisors is an integer number (52533376560).

Almost surely, 2^671551658323 is an apocalyptic number.

671551658323 is a deficient number, since it is larger than the sum of its proper divisors (168982366637).

671551658323 is a wasteful number, since it uses less digits than its factorization.

671551658323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125079546.

The product of its digits is 4536000, while the sum is 52.

The spelling of 671551658323 in words is "six hundred seventy-one billion, five hundred fifty-one million, six hundred fifty-eight thousand, three hundred twenty-three".