13542449664 has 80 divisors (see below), whose sum is σ = 36102341088. Its totient is φ = 4511096832.

The previous prime is 13542449663. The next prime is 13542449677. The reversal of 13542449664 is 46694424531.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (13542449663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4156324 + ... + 4159580.

Almost surely, 2^13542449664 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 13542449664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18051170544).

13542449664 is an abundant number, since it is smaller than the sum of its proper divisors (22559891424).

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

13542449664 is an equidigital number, since it uses as much as digits as its factorization.

13542449664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5985 (or 5969 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 48.

The spelling of 13542449664 in words is "thirteen billion, five hundred forty-two million, four hundred forty-nine thousand, six hundred sixty-four".