671106707772 has 12 divisors (see below), whose sum is σ = 1565915651496. Its totient is φ = 223702235920.

The previous prime is 671106707759. The next prime is 671106707783. The reversal of 671106707772 is 277707601176.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27962779479 + ... + 27962779502.

It is an arithmetic number, because the mean of its divisors is an integer number (130492970958).

Almost surely, 2^671106707772 is an apocalyptic number.

It is an amenable number.

671106707772 is an abundant number, since it is smaller than the sum of its proper divisors (894808943724).

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

671106707772 is a wasteful number, since it uses less digits than its factorization.

671106707772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55925558988 (or 55925558986 counting only the distinct ones).

The product of its (nonzero) digits is 1210104, while the sum is 51.

The spelling of 671106707772 in words is "six hundred seventy-one billion, one hundred six million, seven hundred seven thousand, seven hundred seventy-two".