266121021016063 has 8 divisors (see below), whose sum is σ = 266158687671216. Its totient is φ = 266083355548800.

The previous prime is 266121021016061. The next prime is 266121021016069. The reversal of 266121021016063 is 360610120121662.

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

It is a cyclic number.

It is not a de Polignac number, because 266121021016063 - 2¹ = 266121021016061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266121021016061) 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, 508688020 + ... + 509210902.

It is an arithmetic number, because the mean of its divisors is an integer number (33269835958902).

Almost surely, 2^{266121021016063} is an apocalyptic number.

266121021016063 is a deficient number, since it is larger than the sum of its proper divisors (37666655153).

266121021016063 is an equidigital number, since it uses as much as digits as its factorization.

266121021016063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593945.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 266121021016063 in words is "two hundred sixty-six trillion, one hundred twenty-one billion, twenty-one million, sixteen thousand, sixty-three".