135684103712520 has 128 divisors (see below), whose sum is σ = 445899628183680. Its totient is φ = 32756630016000.

The previous prime is 135684103712489. The next prime is 135684103712543. The reversal of 135684103712520 is 25217301486531.

It is a self number, because there is not a number n which added to its sum of digits gives 135684103712520.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212941191 + ... + 213577430.

It is an arithmetic number, because the mean of its divisors is an integer number (3483590845185).

Almost surely, 2^{135684103712520} is an apocalyptic number.

135684103712520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135684103712520 is an abundant number, since it is smaller than the sum of its proper divisors (310215524471160).

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

135684103712520 is a wasteful number, since it uses less digits than its factorization.

135684103712520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426518887 (or 426518883 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 135684103712520 in words is "one hundred thirty-five trillion, six hundred eighty-four billion, one hundred three million, seven hundred twelve thousand, five hundred twenty".