13506426456 has 64 divisors (see below), whose sum is σ = 35069445120. Its totient is φ = 4330143360.

The previous prime is 13506426371. The next prime is 13506426457. The reversal of 13506426456 is 65462460531.

It is a super-2 number, since 2×13506426456² (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 (13506426457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65586 + ... + 176958.

It is an arithmetic number, because the mean of its divisors is an integer number (547960080).

Almost surely, 2^13506426456 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 13506426456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17534722560).

13506426456 is an abundant number, since it is smaller than the sum of its proper divisors (21563018664).

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

13506426456 is a wasteful number, since it uses less digits than its factorization.

13506426456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111576 (or 111572 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 13506426456 its reverse (65462460531), we get a palindrome (78968886987).

The spelling of 13506426456 in words is "thirteen billion, five hundred six million, four hundred twenty-six thousand, four hundred fifty-six".