13681255690 has 8 divisors (see below), whose sum is σ = 24626260260. Its totient is φ = 5472502272.

The previous prime is 13681255661. The next prime is 13681255697. The reversal of 13681255690 is 9655218631.

It can be written as a sum of positive squares in 2 ways, for example, as 13650884569 + 30371121 = 116837^2 + 5511^2 .

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

It is a super-2 number, since 2×13681255690² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13681255690.

It is not an unprimeable number, because it can be changed into a prime (13681255697) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 684062775 + ... + 684062794.

Almost surely, 2^13681255690 is an apocalyptic number.

13681255690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13681255690 is a deficient number, since it is larger than the sum of its proper divisors (10945004570).

13681255690 is a wasteful number, since it uses less digits than its factorization.

13681255690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368125576.

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 13681255690 in words is "thirteen billion, six hundred eighty-one million, two hundred fifty-five thousand, six hundred ninety".