135540987686 has 32 divisors (see below), whose sum is σ = 230504100960. Its totient is φ = 59257287936.

The previous prime is 135540987649. The next prime is 135540987697. The reversal of 135540987686 is 686789045531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5756690 + ... + 5780186.

It is an arithmetic number, because the mean of its divisors is an integer number (7203253155).

Almost surely, 2^135540987686 is an apocalyptic number.

135540987686 is a deficient number, since it is larger than the sum of its proper divisors (94963113274).

135540987686 is a wasteful number, since it uses less digits than its factorization.

135540987686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35208.

The product of its (nonzero) digits is 43545600, while the sum is 62.

The spelling of 135540987686 in words is "one hundred thirty-five billion, five hundred forty million, nine hundred eighty-seven thousand, six hundred eighty-six".