666211527367199 has 8 divisors (see below), whose sum is σ = 726806518295760. Its totient is φ = 605621587542400.

The previous prime is 666211527367189. The next prime is 666211527367201. The reversal of 666211527367199 is 991763725112666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 666211527367199 - 2⁴⁸ = 384736550656543 is a prime.

It is a super-2 number, since 2×666211527367199² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666211527367189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1262500154 + ... + 1263027735.

It is an arithmetic number, because the mean of its divisors is an integer number (90850814786970).

Almost surely, 2^{666211527367199} is an apocalyptic number.

666211527367199 is a deficient number, since it is larger than the sum of its proper divisors (60594990928561).

666211527367199 is a wasteful number, since it uses less digits than its factorization.

666211527367199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525551881.

The product of its digits is 308629440, while the sum is 71.

The spelling of 666211527367199 in words is "six hundred sixty-six trillion, two hundred eleven billion, five hundred twenty-seven million, three hundred sixty-seven thousand, one hundred ninety-nine".