671080782057 has 32 divisors (see below), whose sum is σ = 1082823899904. Its totient is φ = 360893491200.

The previous prime is 671080781993. The next prime is 671080782083. The reversal of 671080782057 is 750287080176.

It is not a de Polignac number, because 671080782057 - 2⁶ = 671080781993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (671080782257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6222957 + ... + 6329877.

It is an arithmetic number, because the mean of its divisors is an integer number (33838246872).

Almost surely, 2^671080782057 is an apocalyptic number.

It is an amenable number.

671080782057 is a deficient number, since it is larger than the sum of its proper divisors (411743117847).

671080782057 is a wasteful number, since it uses less digits than its factorization.

671080782057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124529.

The product of its (nonzero) digits is 1317120, while the sum is 51.

The spelling of 671080782057 in words is "six hundred seventy-one billion, eighty million, seven hundred eighty-two thousand, fifty-seven".