23201543507 has 2 divisors, whose sum is σ = 23201543508. Its totient is φ = 23201543506.

The previous prime is 23201543461. The next prime is 23201543537. The reversal of 23201543507 is 70534510232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23201543507 - 2³² = 18906576211 is a prime.

It is a super-2 number, since 2×23201543507² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23201543537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11600771753 + 11600771754.

It is an arithmetic number, because the mean of its divisors is an integer number (11600771754).

Almost surely, 2^23201543507 is an apocalyptic number.

23201543507 is a deficient number, since it is larger than the sum of its proper divisors (1).

23201543507 is an equidigital number, since it uses as much as digits as its factorization.

23201543507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 32.

The spelling of 23201543507 in words is "twenty-three billion, two hundred one million, five hundred forty-three thousand, five hundred seven".