671762199959 has 12 divisors (see below), whose sum is σ = 750683592864. Its totient is φ = 598970624832.

The previous prime is 671762199947. The next prime is 671762200091. The reversal of 671762199959 is 959991267176.

671762199959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-671762199959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671762199892 and 671762199901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671762199929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54724367 + ... + 54736640.

It is an arithmetic number, because the mean of its divisors is an integer number (62556966072).

Almost surely, 2^671762199959 is an apocalyptic number.

671762199959 is a deficient number, since it is larger than the sum of its proper divisors (78921392905).

671762199959 is a wasteful number, since it uses less digits than its factorization.

671762199959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109461062 (or 109461043 counting only the distinct ones).

The product of its digits is 115736040, while the sum is 71.

The spelling of 671762199959 in words is "six hundred seventy-one billion, seven hundred sixty-two million, one hundred ninety-nine thousand, nine hundred fifty-nine".