13540216452 has 72 divisors (see below), whose sum is σ = 37745374464. Its totient is φ = 3764069568.

The previous prime is 13540216451. The next prime is 13540216463. The reversal of 13540216452 is 25461204531.

It is a super-2 number, since 2×13540216452² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13540216451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 289428 + ... + 332939.

It is an arithmetic number, because the mean of its divisors is an integer number (524241312).

Almost surely, 2^13540216452 is an apocalyptic number.

13540216452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13540216452 is an abundant number, since it is smaller than the sum of its proper divisors (24205158012).

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

13540216452 is a wasteful number, since it uses less digits than its factorization.

13540216452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622425 (or 622416 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 13540216452 in words is "thirteen billion, five hundred forty million, two hundred sixteen thousand, four hundred fifty-two".