23551520732539 has 2 divisors, whose sum is σ = 23551520732540. Its totient is φ = 23551520732538.

The previous prime is 23551520732503. The next prime is 23551520732557. The reversal of 23551520732539 is 93523702515532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23551520732539 - 2⁹ = 23551520732027 is a prime.

It is not a weakly prime, because it can be changed into another prime (23551520730539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11775760366269 + 11775760366270.

It is an arithmetic number, because the mean of its divisors is an integer number (11775760366270).

Almost surely, 2^{23551520732539} is an apocalyptic number.

23551520732539 is a deficient number, since it is larger than the sum of its proper divisors (1).

23551520732539 is an equidigital number, since it uses as much as digits as its factorization.

23551520732539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505000, while the sum is 52.

The spelling of 23551520732539 in words is "twenty-three trillion, five hundred fifty-one billion, five hundred twenty million, seven hundred thirty-two thousand, five hundred thirty-nine".