13032663644 has 72 divisors (see below), whose sum is σ = 30854293344. Its totient is φ = 4687056000.

The previous prime is 13032663619. The next prime is 13032663649. The reversal of 13032663644 is 44636623031.

It is a junction number, because it is equal to n+sod(n) for n = 13032663598 and 13032663607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13032663649) 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, 103907 + ... + 191994.

It is an arithmetic number, because the mean of its divisors is an integer number (428531852).

Almost surely, 2^13032663644 is an apocalyptic number.

13032663644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13032663644 is an abundant number, since it is smaller than the sum of its proper divisors (17821629700).

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

13032663644 is a wasteful number, since it uses less digits than its factorization.

13032663644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295947 (or 295934 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 38.

It can be divided in two parts, 13032 and 663644, that added together give a palindrome (676676).

The spelling of 13032663644 in words is "thirteen billion, thirty-two million, six hundred sixty-three thousand, six hundred forty-four".