13458949896 has 128 divisors (see below), whose sum is σ = 40591872000. Its totient is φ = 3632781312.

The previous prime is 13458949891. The next prime is 13458949897. The reversal of 13458949896 is 69894985431.

It is a super-2 number, since 2×13458949896² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13458949891) 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, 1165720 + ... + 1177208.

It is an arithmetic number, because the mean of its divisors is an integer number (317124000).

Almost surely, 2^13458949896 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 13458949896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20295936000).

13458949896 is an abundant number, since it is smaller than the sum of its proper divisors (27132922104).

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

13458949896 is a wasteful number, since it uses less digits than its factorization.

13458949896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11891 (or 11887 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 66.

The spelling of 13458949896 in words is "thirteen billion, four hundred fifty-eight million, nine hundred forty-nine thousand, eight hundred ninety-six".