123615664755 has 64 divisors (see below), whose sum is σ = 218961100800. Its totient is φ = 59053104000.

The previous prime is 123615664729. The next prime is 123615664763. The reversal of 123615664755 is 557466516321.

It is a happy number.

It is not a de Polignac number, because 123615664755 - 2⁸ = 123615664499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123615664698 and 123615664707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3363730 + ... + 3400280.

It is an arithmetic number, because the mean of its divisors is an integer number (3421267200).

Almost surely, 2^123615664755 is an apocalyptic number.

123615664755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123615664755 is a deficient number, since it is larger than the sum of its proper divisors (95345436045).

123615664755 is a wasteful number, since it uses less digits than its factorization.

123615664755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36872.

The product of its digits is 4536000, while the sum is 51.

It can be divided in two parts, 12361566 and 4755, that added together give a palindrome (12366321).

The spelling of 123615664755 in words is "one hundred twenty-three billion, six hundred fifteen million, six hundred sixty-four thousand, seven hundred fifty-five".