666037054624123 has 64 divisors (see below), whose sum is σ = 845428026240000. Its totient is φ = 510745629487104.

The previous prime is 666037054624049. The next prime is 666037054624127. The reversal of 666037054624123 is 321426450730666.

666037054624123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666037054624123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666037054624127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 163802403 + ... + 167819251.

It is an arithmetic number, because the mean of its divisors is an integer number (13209812910000).

Almost surely, 2^{666037054624123} is an apocalyptic number.

666037054624123 is a deficient number, since it is larger than the sum of its proper divisors (179390971615877).

666037054624123 is a wasteful number, since it uses less digits than its factorization.

666037054624123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4017364.

The product of its (nonzero) digits is 26127360, while the sum is 55.

The spelling of 666037054624123 in words is "six hundred sixty-six trillion, thirty-seven billion, fifty-four million, six hundred twenty-four thousand, one hundred twenty-three".