100445385123 has 20 divisors (see below), whose sum is σ = 157945312360. Its totient is φ = 63439189632.

The previous prime is 100445385113. The next prime is 100445385197. The reversal of 100445385123 is 321583544001.

100445385123 is a `hidden beast` number, since 1 + 0 + 0 + 4 + 453 + 85 + 123 = 666.

It is not a de Polignac number, because 100445385123 - 2⁴ = 100445385107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100445385113) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32631790 + ... + 32634867.

It is an arithmetic number, because the mean of its divisors is an integer number (7897265618).

Almost surely, 2^100445385123 is an apocalyptic number.

100445385123 is a deficient number, since it is larger than the sum of its proper divisors (57499927237).

100445385123 is an equidigital number, since it uses as much as digits as its factorization.

100445385123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65266688 (or 65266679 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 100445385123 in words is "one hundred billion, four hundred forty-five million, three hundred eighty-five thousand, one hundred twenty-three".