13731764560 has 20 divisors (see below), whose sum is σ = 31926352788. Its totient is φ = 5492705792.

The previous prime is 13731764549. The next prime is 13731764561. The reversal of 13731764560 is 6546713731.

It can be written as a sum of positive squares in 2 ways, for example, as 3794067216 + 9937697344 = 61596^2 + 99688^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×13731764560² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13731764561) 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, 85823449 + ... + 85823608.

Almost surely, 2^13731764560 is an apocalyptic number.

13731764560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13731764560 is an abundant number, since it is smaller than the sum of its proper divisors (18194588228).

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

13731764560 is a wasteful number, since it uses less digits than its factorization.

13731764560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171647070 (or 171647064 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 13731764560 in words is "thirteen billion, seven hundred thirty-one million, seven hundred sixty-four thousand, five hundred sixty".