6613149553326 has 80 divisors (see below), whose sum is σ = 15314182202880. Its totient is φ = 2130789220560.

The previous prime is 6613149553313. The next prime is 6613149553363. The reversal of 6613149553326 is 6233559413166.

6613149553326 is a `hidden beast` number, since 6 + 6 + 1 + 3 + 14 + 95 + 533 + 2 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3547405 + ... + 5080391.

It is an arithmetic number, because the mean of its divisors is an integer number (191427277536).

Almost surely, 2^{6613149553326} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6613149553326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7657091101440).

6613149553326 is an abundant number, since it is smaller than the sum of its proper divisors (8701032649554).

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

6613149553326 is a wasteful number, since it uses less digits than its factorization.

6613149553326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533891 (or 1533882 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 54.

The spelling of 6613149553326 in words is "six trillion, six hundred thirteen billion, one hundred forty-nine million, five hundred fifty-three thousand, three hundred twenty-six".