667216076543 has 2 divisors, whose sum is σ = 667216076544. Its totient is φ = 667216076542.

The previous prime is 667216076507. The next prime is 667216076587. The reversal of 667216076543 is 345670612766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667216076543 - 2³² = 662921109247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667216046543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333608038271 + 333608038272.

It is an arithmetic number, because the mean of its divisors is an integer number (333608038272).

Almost surely, 2^667216076543 is an apocalyptic number.

667216076543 is a deficient number, since it is larger than the sum of its proper divisors (1).

667216076543 is an equidigital number, since it uses as much as digits as its factorization.

667216076543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 53.

The spelling of 667216076543 in words is "six hundred sixty-seven billion, two hundred sixteen million, seventy-six thousand, five hundred forty-three".