671705012712 has 32 divisors (see below), whose sum is σ = 1684662108480. Its totient is φ = 223181727360.

The previous prime is 671705012683. The next prime is 671705012723. The reversal of 671705012712 is 217210507176.

It is a happy number.

671705012712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44988853 + ... + 45003780.

It is an arithmetic number, because the mean of its divisors is an integer number (52645690890).

Almost surely, 2^671705012712 is an apocalyptic number.

It is an amenable number.

671705012712 is an abundant number, since it is smaller than the sum of its proper divisors (1012957095768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671705012712 is a wasteful number, since it uses less digits than its factorization.

671705012712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89992953 (or 89992949 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 39.

Adding to 671705012712 its reverse (217210507176), we get a palindrome (888915519888).

The spelling of 671705012712 in words is "six hundred seventy-one billion, seven hundred five million, twelve thousand, seven hundred twelve".