63664266246636 has 144 divisors (see below), whose sum is σ = 168561897606144. Its totient is φ = 18668482800000.

The previous prime is 63664266246619. The next prime is 63664266246671.

63664266246636 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×63664266246636³ (a number of 42 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 711279886 + ... + 711369386.

It is an arithmetic number, because the mean of its divisors is an integer number (1170568733376).

Almost surely, 2^{63664266246636} is an apocalyptic number.

63664266246636 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63664266246636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84280948803072).

63664266246636 is an abundant number, since it is smaller than the sum of its proper divisors (104897631359508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63664266246636 is a wasteful number, since it uses less digits than its factorization.

63664266246636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105364 (or 105351 counting only the distinct ones).

The product of its digits is 967458816, while the sum is 66.

The spelling of 63664266246636 in words is "sixty-three trillion, six hundred sixty-four billion, two hundred sixty-six million, two hundred forty-six thousand, six hundred thirty-six".