13540140140 has 24 divisors (see below), whose sum is σ = 29095558800. Its totient is φ = 5290100928.

The previous prime is 13540140109. The next prime is 13540140143. The reversal of 13540140140 is 4104104531.

It is not an unprimeable number, because it can be changed into a prime (13540140143) 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, 7871315 + ... + 7873034.

It is an arithmetic number, because the mean of its divisors is an integer number (1212314950).

Almost surely, 2^13540140140 is an apocalyptic number.

13540140140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13540140140 is an abundant number, since it is smaller than the sum of its proper divisors (15555418660).

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

13540140140 is a wasteful number, since it uses less digits than its factorization.

13540140140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15744401 (or 15744399 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 13540140140 its reverse (4104104531), we get a palindrome (17644244671).

The spelling of 13540140140 in words is "thirteen billion, five hundred forty million, one hundred forty thousand, one hundred forty".