13002523644 has 96 divisors (see below), whose sum is σ = 35130412800. Its totient is φ = 3699266560.

The previous prime is 13002523637. The next prime is 13002523649. The reversal of 13002523644 is 44632520031.

It is a super-2 number, since 2×13002523644² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13002523649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 933322 + ... + 947150.

It is an arithmetic number, because the mean of its divisors is an integer number (365941800).

Almost surely, 2^13002523644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13002523644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17565206400).

13002523644 is an abundant number, since it is smaller than the sum of its proper divisors (22127889156).

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

13002523644 is a wasteful number, since it uses less digits than its factorization.

13002523644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14283 (or 14281 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The spelling of 13002523644 in words is "thirteen billion, two million, five hundred twenty-three thousand, six hundred forty-four".