13113421552 has 120 divisors (see below), whose sum is σ = 32310824832. Its totient is φ = 5098262400.

The previous prime is 13113421547. The next prime is 13113421567. The reversal of 13113421552 is 25512431131.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 13113421552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4922973 + ... + 4925635.

Almost surely, 2^13113421552 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 13113421552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16155412416).

13113421552 is an abundant number, since it is smaller than the sum of its proper divisors (19197403280).

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

13113421552 is a wasteful number, since it uses less digits than its factorization.

13113421552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267 (or 3254 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

Adding to 13113421552 its reverse (25512431131), we get a palindrome (38625852683).

The spelling of 13113421552 in words is "thirteen billion, one hundred thirteen million, four hundred twenty-one thousand, five hundred fifty-two".