23534153513 has 4 divisors (see below), whose sum is σ = 25344473028. Its totient is φ = 21723834000.

The previous prime is 23534153509. The next prime is 23534153543. The reversal of 23534153513 is 31535143532.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9879763609 + 13654389904 = 99397^2 + 116852^2 .

It is a cyclic number.

It is not a de Polignac number, because 23534153513 - 2² = 23534153509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23534153543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905159738 + ... + 905159763.

It is an arithmetic number, because the mean of its divisors is an integer number (6336118257).

Almost surely, 2^23534153513 is an apocalyptic number.

It is an amenable number.

23534153513 is a deficient number, since it is larger than the sum of its proper divisors (1810319515).

23534153513 is a wasteful number, since it uses less digits than its factorization.

23534153513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810319514.

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

The spelling of 23534153513 in words is "twenty-three billion, five hundred thirty-four million, one hundred fifty-three thousand, five hundred thirteen".