123755735664655 has 8 divisors (see below), whose sum is σ = 148510064527200. Its totient is φ = 99002467378656.

The previous prime is 123755735664629. The next prime is 123755735664661. The reversal of 123755735664655 is 556466537557321.

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

It is a cyclic number.

It is not a de Polignac number, because 123755735664655 - 2¹³ = 123755735656463 is a prime.

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, 264887400 + ... + 265354189.

It is an arithmetic number, because the mean of its divisors is an integer number (18563758065900).

Almost surely, 2^{123755735664655} is an apocalyptic number.

123755735664655 is a deficient number, since it is larger than the sum of its proper divisors (24754328862545).

123755735664655 is an equidigital number, since it uses as much as digits as its factorization.

123755735664655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530288273.

The product of its digits is 2381400000, while the sum is 70.

The spelling of 123755735664655 in words is "one hundred twenty-three trillion, seven hundred fifty-five billion, seven hundred thirty-five million, six hundred sixty-four thousand, six hundred fifty-five".