23513351543 has 16 divisors (see below), whose sum is σ = 25903722240. Its totient is φ = 21165316800.

The previous prime is 23513351527. The next prime is 23513351551. The reversal of 23513351543 is 34515331532.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23513351543 - 2⁴ = 23513351527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23513351503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3187163 + ... + 3194531.

It is an arithmetic number, because the mean of its divisors is an integer number (1618982640).

Almost surely, 2^23513351543 is an apocalyptic number.

23513351543 is a deficient number, since it is larger than the sum of its proper divisors (2390370697).

23513351543 is a wasteful number, since it uses less digits than its factorization.

23513351543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10198.

The product of its digits is 81000, while the sum is 35.

The spelling of 23513351543 in words is "twenty-three billion, five hundred thirteen million, three hundred fifty-one thousand, five hundred forty-three".