13540546321540 has 48 divisors (see below), whose sum is σ = 32550324936192. Its totient is φ = 4634899629696.

The previous prime is 13540546321501. The next prime is 13540546321543. The reversal of 13540546321540 is 4512364504531.

It is not an unprimeable number, because it can be changed into a prime (13540546321543) 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, 78803404 + ... + 78975043.

It is an arithmetic number, because the mean of its divisors is an integer number (678131769504).

Almost surely, 2^{13540546321540} is an apocalyptic number.

13540546321540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13540546321540 is an abundant number, since it is smaller than the sum of its proper divisors (19009778614652).

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

13540546321540 is a wasteful number, since it uses less digits than its factorization.

13540546321540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157779076 (or 157779074 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 13540546321540 in words is "thirteen trillion, five hundred forty billion, five hundred forty-six million, three hundred twenty-one thousand, five hundred forty".