667876468439 has 2 divisors, whose sum is σ = 667876468440. Its totient is φ = 667876468438.

The previous prime is 667876468423. The next prime is 667876468451. The reversal of 667876468439 is 934864678766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667876468439 - 2⁴ = 667876468423 is a prime.

It is a super-4 number, since 4×667876468439⁴ (a number of 48 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667876168439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333938234219 + 333938234220.

It is an arithmetic number, because the mean of its divisors is an integer number (333938234220).

Almost surely, 2^667876468439 is an apocalyptic number.

667876468439 is a deficient number, since it is larger than the sum of its proper divisors (1).

667876468439 is an equidigital number, since it uses as much as digits as its factorization.

667876468439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1755758592, while the sum is 74.

The spelling of 667876468439 in words is "six hundred sixty-seven billion, eight hundred seventy-six million, four hundred sixty-eight thousand, four hundred thirty-nine".