13540701686 has 4 divisors (see below), whose sum is σ = 20311052532. Its totient is φ = 6770350842.

The previous prime is 13540701679. The next prime is 13540701751. The reversal of 13540701686 is 68610704531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68610704531 = 5623 ⋅12201797.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3385175420 + ... + 3385175423.

It is an arithmetic number, because the mean of its divisors is an integer number (5077763133).

Almost surely, 2^13540701686 is an apocalyptic number.

13540701686 is a deficient number, since it is larger than the sum of its proper divisors (6770350846).

13540701686 is an equidigital number, since it uses as much as digits as its factorization.

13540701686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770350845.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 13540701686 in words is "thirteen billion, five hundred forty million, seven hundred one thousand, six hundred eighty-six".