129735271765 has 8 divisors (see below), whose sum is σ = 169835264928. Its totient is φ = 94352924880.

The previous prime is 129735271703. The next prime is 129735271807. The reversal of 129735271765 is 567172537921.

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

It is not a de Polignac number, because 129735271765 - 2²³ = 129726883157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55), and also a Moran number because the ratio is a prime number: 2358823123 = 129735271765 / (1 + 2 + 9 + 7 + 3 + 5 + 2 + 7 + 1 + 7 + 6 + 5).

It is a Duffinian number.

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, 1179411507 + ... + 1179411616.

It is an arithmetic number, because the mean of its divisors is an integer number (21229408116).

Almost surely, 2^129735271765 is an apocalyptic number.

It is an amenable number.

129735271765 is a deficient number, since it is larger than the sum of its proper divisors (40099993163).

129735271765 is a wasteful number, since it uses less digits than its factorization.

129735271765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358823139.

The product of its digits is 5556600, while the sum is 55.

The spelling of 129735271765 in words is "one hundred twenty-nine billion, seven hundred thirty-five million, two hundred seventy-one thousand, seven hundred sixty-five".