666553346200063 has 24 divisors (see below), whose sum is σ = 775533898366560. Its totient is φ = 571216857140160.

The previous prime is 666553346200031. The next prime is 666553346200081. The reversal of 666553346200063 is 360002643355666.

It is not a de Polignac number, because 666553346200063 - 2⁵ = 666553346200031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 666553346199977 and 666553346200013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666553346300063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13664175733 + ... + 13664224513.

It is an arithmetic number, because the mean of its divisors is an integer number (32313912431940).

Almost surely, 2^{666553346200063} is an apocalyptic number.

666553346200063 is a deficient number, since it is larger than the sum of its proper divisors (108980552166497).

666553346200063 is a wasteful number, since it uses less digits than its factorization.

666553346200063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99007 (or 99000 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 55.

The spelling of 666553346200063 in words is "six hundred sixty-six trillion, five hundred fifty-three billion, three hundred forty-six million, two hundred thousand, sixty-three".