123660256663 has 8 divisors (see below), whose sum is σ = 127028001168. Its totient is φ = 120293858304.

The previous prime is 123660256651. The next prime is 123660256669. The reversal of 123660256663 is 366652066321.

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 123660256663 - 2¹⁷ = 123660125591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123660256669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148906 + ... + 519127.

It is an arithmetic number, because the mean of its divisors is an integer number (15878500146).

Almost surely, 2^123660256663 is an apocalyptic number.

123660256663 is a deficient number, since it is larger than the sum of its proper divisors (3367744505).

123660256663 is an equidigital number, since it uses as much as digits as its factorization.

123660256663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673073.

The product of its (nonzero) digits is 1399680, while the sum is 46.

The spelling of 123660256663 in words is "one hundred twenty-three billion, six hundred sixty million, two hundred fifty-six thousand, six hundred sixty-three".