671043467421 has 24 divisors (see below), whose sum is σ = 973676134080. Its totient is φ = 445336131456.

The previous prime is 671043467417. The next prime is 671043467443. The reversal of 671043467421 is 124764340176.

671043467421 is a `hidden beast` number, since 67 + 104 + 3 + 4 + 67 + 421 = 666.

It is not a de Polignac number, because 671043467421 - 2² = 671043467417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671043467021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22443760 + ... + 22473638.

It is an arithmetic number, because the mean of its divisors is an integer number (40569838920).

Almost surely, 2^671043467421 is an apocalyptic number.

It is an amenable number.

671043467421 is a deficient number, since it is larger than the sum of its proper divisors (302632666659).

671043467421 is a wasteful number, since it uses less digits than its factorization.

671043467421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41105 (or 41102 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 671043467421 in words is "six hundred seventy-one billion, forty-three million, four hundred sixty-seven thousand, four hundred twenty-one".