13457787868081 has 8 divisors (see below), whose sum is σ = 13850776164960. Its totient is φ = 13070295911232.

The previous prime is 13457787867991. The next prime is 13457787868093. The reversal of 13457787868081 is 18086878775431.

13457787868081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13457787868081 is a prime.

It is a super-2 number, since 2×13457787868081² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13457787867995 and 13457787868013.

It is not an unprimeable number, because it can be changed into a prime (13457787868981) 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, 1374080040 + ... + 1374089833.

It is an arithmetic number, because the mean of its divisors is an integer number (1731347020620).

Almost surely, 2^{13457787868081} is an apocalyptic number.

It is an amenable number.

13457787868081 is a deficient number, since it is larger than the sum of its proper divisors (392988296879).

13457787868081 is an equidigital number, since it uses as much as digits as its factorization.

13457787868081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748170015.

The product of its (nonzero) digits is 505774080, while the sum is 73.

The spelling of 13457787868081 in words is "thirteen trillion, four hundred fifty-seven billion, seven hundred eighty-seven million, eight hundred sixty-eight thousand, eighty-one".