523661152123 has 2 divisors, whose sum is σ = 523661152124. Its totient is φ = 523661152122.

The previous prime is 523661151973. The next prime is 523661152129. The reversal of 523661152123 is 321251166325.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 523661152123 - 2³⁷ = 386222198651 is a prime.

It is not a weakly prime, because it can be changed into another prime (523661152129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261830576061 + 261830576062.

It is an arithmetic number, because the mean of its divisors is an integer number (261830576062).

Almost surely, 2^523661152123 is an apocalyptic number.

523661152123 is a deficient number, since it is larger than the sum of its proper divisors (1).

523661152123 is an equidigital number, since it uses as much as digits as its factorization.

523661152123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The spelling of 523661152123 in words is "five hundred twenty-three billion, six hundred sixty-one million, one hundred fifty-two thousand, one hundred twenty-three".