671776656059 has 2 divisors, whose sum is σ = 671776656060. Its totient is φ = 671776656058.

The previous prime is 671776655981. The next prime is 671776656101. The reversal of 671776656059 is 950656677176.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671776656059 is a prime.

It is a super-2 number, since 2×671776656059² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 671776655986 and 671776656004.

It is not a weakly prime, because it can be changed into another prime (671776656359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335888328029 + 335888328030.

It is an arithmetic number, because the mean of its divisors is an integer number (335888328030).

Almost surely, 2^671776656059 is an apocalyptic number.

671776656059 is a deficient number, since it is larger than the sum of its proper divisors (1).

671776656059 is an equidigital number, since it uses as much as digits as its factorization.

671776656059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100018800, while the sum is 65.

The spelling of 671776656059 in words is "six hundred seventy-one billion, seven hundred seventy-six million, six hundred fifty-six thousand, fifty-nine".