23040221523479 has 2 divisors, whose sum is σ = 23040221523480. Its totient is φ = 23040221523478.

The previous prime is 23040221523409. The next prime is 23040221523491. The reversal of 23040221523479 is 97432512204032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23040221523479 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23040221523409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11520110761739 + 11520110761740.

It is an arithmetic number, because the mean of its divisors is an integer number (11520110761740).

Almost surely, 2^{23040221523479} is an apocalyptic number.

23040221523479 is a deficient number, since it is larger than the sum of its proper divisors (1).

23040221523479 is an equidigital number, since it uses as much as digits as its factorization.

23040221523479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 23040221523479 in words is "twenty-three trillion, forty billion, two hundred twenty-one million, five hundred twenty-three thousand, four hundred seventy-nine".