671712461245 has 16 divisors (see below), whose sum is σ = 933824920320. Its totient is φ = 454293201024.

The previous prime is 671712461239. The next prime is 671712461263. The reversal of 671712461245 is 542164217176.

It is a cyclic number.

It is not a de Polignac number, because 671712461245 - 2⁵ = 671712461213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 671712461195 and 671712461204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131448025 + ... + 131453134.

It is an arithmetic number, because the mean of its divisors is an integer number (58364057520).

Almost surely, 2^671712461245 is an apocalyptic number.

It is an amenable number.

671712461245 is a deficient number, since it is larger than the sum of its proper divisors (262112459075).

671712461245 is a wasteful number, since it uses less digits than its factorization.

671712461245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262901244.

The product of its digits is 564480, while the sum is 46.

The spelling of 671712461245 in words is "six hundred seventy-one billion, seven hundred twelve million, four hundred sixty-one thousand, two hundred forty-five".