13540653660 has 48 divisors (see below), whose sum is σ = 38083885056. Its totient is φ = 3594645312.

The previous prime is 13540653647. The next prime is 13540653691. The reversal of 13540653660 is 6635604531.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492624 + ... + 519383.

It is an arithmetic number, because the mean of its divisors is an integer number (793414272).

Almost surely, 2^13540653660 is an apocalyptic number.

13540653660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13540653660 is an abundant number, since it is smaller than the sum of its proper divisors (24543231396).

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

13540653660 is a wasteful number, since it uses less digits than its factorization.

13540653660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012242 (or 1012240 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 13540653660 in words is "thirteen billion, five hundred forty million, six hundred fifty-three thousand, six hundred sixty".