23040221523491 has 2 divisors, whose sum is σ = 23040221523492. Its totient is φ = 23040221523490.

The previous prime is 23040221523479. The next prime is 23040221523511. The reversal of 23040221523491 is 19432512204032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23040221523491 - 2¹⁰ = 23040221522467 is a prime.

It is not a weakly prime, because it can be changed into another prime (23040221523391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11520110761745 + 11520110761746.

It is an arithmetic number, because the mean of its divisors is an integer number (11520110761746).

Almost surely, 2^{23040221523491} is an apocalyptic number.

23040221523491 is a deficient number, since it is larger than the sum of its proper divisors (1).

23040221523491 is an equidigital number, since it uses as much as digits as its factorization.

23040221523491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 23040221523491 in words is "twenty-three trillion, forty billion, two hundred twenty-one million, five hundred twenty-three thousand, four hundred ninety-one".