90669112123 has 2 divisors, whose sum is σ = 90669112124. Its totient is φ = 90669112122.

The previous prime is 90669112117. The next prime is 90669112151. The reversal of 90669112123 is 32121196609.

It is a weak prime.

It is an emirp because it is prime and its reverse (32121196609) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90669112123 is a prime.

It is not a weakly prime, because it can be changed into another prime (90669118123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45334556061 + 45334556062.

It is an arithmetic number, because the mean of its divisors is an integer number (45334556062).

Almost surely, 2^90669112123 is an apocalyptic number.

90669112123 is a deficient number, since it is larger than the sum of its proper divisors (1).

90669112123 is an equidigital number, since it uses as much as digits as its factorization.

90669112123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 90669112123 in words is "ninety billion, six hundred sixty-nine million, one hundred twelve thousand, one hundred twenty-three".