23613585513 has 16 divisors (see below), whose sum is σ = 37547068416. Its totient is φ = 12906804240.

The previous prime is 23613585487. The next prime is 23613585539. The reversal of 23613585513 is 31558531632.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23613585487) and next prime (23613585539).

It is not a de Polignac number, because 23613585513 - 2⁹ = 23613585001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23613585013) 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, 24444223 + ... + 24445188.

It is an arithmetic number, because the mean of its divisors is an integer number (2346691776).

Almost surely, 2^23613585513 is an apocalyptic number.

23613585513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23613585513 is a deficient number, since it is larger than the sum of its proper divisors (13933482903).

23613585513 is a wasteful number, since it uses less digits than its factorization.

23613585513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48889444.

The product of its digits is 324000, while the sum is 42.

The spelling of 23613585513 in words is "twenty-three billion, six hundred thirteen million, five hundred eighty-five thousand, five hundred thirteen".