668892547959 has 16 divisors (see below), whose sum is σ = 897101622144. Its totient is φ = 443307664800.

The previous prime is 668892547937. The next prime is 668892547987. The reversal of 668892547959 is 959745298866.

It is not a de Polignac number, because 668892547959 - 2⁹ = 668892547447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668892547159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1327104 + ... + 1760394.

It is an arithmetic number, because the mean of its divisors is an integer number (56068851384).

Almost surely, 2^668892547959 is an apocalyptic number.

668892547959 is a deficient number, since it is larger than the sum of its proper divisors (228209074185).

668892547959 is a wasteful number, since it uses less digits than its factorization.

668892547959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436318.

The product of its digits is 2351462400, while the sum is 78.

The spelling of 668892547959 in words is "six hundred sixty-eight billion, eight hundred ninety-two million, five hundred forty-seven thousand, nine hundred fifty-nine".