123727638500785 has 32 divisors (see below), whose sum is σ = 164206414707840. Its totient is φ = 88741942156800.

The previous prime is 123727638500759. The next prime is 123727638500801. The reversal of 123727638500785 is 587005836727321.

It is not a de Polignac number, because 123727638500785 - 2¹³ = 123727638492593 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37519975 + ... + 40684195.

It is an arithmetic number, because the mean of its divisors is an integer number (5131450459620).

Almost surely, 2^{123727638500785} is an apocalyptic number.

It is an amenable number.

123727638500785 is a deficient number, since it is larger than the sum of its proper divisors (40478776207055).

123727638500785 is a wasteful number, since it uses less digits than its factorization.

123727638500785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174049.

The product of its (nonzero) digits is 118540800, while the sum is 64.

The spelling of 123727638500785 in words is "one hundred twenty-three trillion, seven hundred twenty-seven billion, six hundred thirty-eight million, five hundred thousand, seven hundred eighty-five".