13113816535640 has 16 divisors (see below), whose sum is σ = 29506087205280. Its totient is φ = 5245526614240.

The previous prime is 13113816535621. The next prime is 13113816535649. The reversal of 13113816535640 is 4653561831131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113816535649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163922706656 + ... + 163922706735.

It is an arithmetic number, because the mean of its divisors is an integer number (1844130450330).

Almost surely, 2^{13113816535640} is an apocalyptic number.

13113816535640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13113816535640 is an abundant number, since it is smaller than the sum of its proper divisors (16392270669640).

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

13113816535640 is a wasteful number, since it uses less digits than its factorization.

13113816535640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327845413402 (or 327845413398 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 13113816535640 in words is "thirteen trillion, one hundred thirteen billion, eight hundred sixteen million, five hundred thirty-five thousand, six hundred forty".