135639708500 has 24 divisors (see below), whose sum is σ = 296237124456. Its totient is φ = 54255883200.

The previous prime is 135639708433. The next prime is 135639708517. The reversal of 135639708500 is 5807936531.

It can be written as a sum of positive squares in 4 ways, for example, as 3169915204 + 132469793296 = 56302^2 + 363964^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 135639209 + ... + 135640208.

It is an arithmetic number, because the mean of its divisors is an integer number (12343213519).

Almost surely, 2^135639708500 is an apocalyptic number.

135639708500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135639708500 is an abundant number, since it is smaller than the sum of its proper divisors (160597415956).

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

135639708500 is a wasteful number, since it uses less digits than its factorization.

135639708500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271279436 (or 271279424 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 47.

The spelling of 135639708500 in words is "one hundred thirty-five billion, six hundred thirty-nine million, seven hundred eight thousand, five hundred".