666356151441633 has 16 divisors (see below), whose sum is σ = 888929943185856. Its totient is φ = 444009905265600.

The previous prime is 666356151441619. The next prime is 666356151441641. The reversal of 666356151441633 is 336144151653666.

It is not a de Polignac number, because 666356151441633 - 2¹⁴ = 666356151425249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (666356151440633) 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, 330366483 + ... + 332377383.

It is an arithmetic number, because the mean of its divisors is an integer number (55558121449116).

Almost surely, 2^{666356151441633} is an apocalyptic number.

It is an amenable number.

666356151441633 is a deficient number, since it is larger than the sum of its proper divisors (222573791744223).

666356151441633 is a wasteful number, since it uses less digits than its factorization.

666356151441633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067424.

The product of its digits is 83980800, while the sum is 60.

The spelling of 666356151441633 in words is "six hundred sixty-six trillion, three hundred fifty-six billion, one hundred fifty-one million, four hundred forty-one thousand, six hundred thirty-three".