23113015135505 has 8 divisors (see below), whose sum is σ = 27780570545832. Its totient is φ = 18460443852928.

The previous prime is 23113015135451. The next prime is 23113015135543. The reversal of 23113015135505 is 50553151031132.

It can be written as a sum of positive squares in 4 ways, for example, as 282240375169 + 22830774760336 = 531263^2 + 4778156^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23113015135505 is a prime.

It is a super-2 number, since 2×23113015135505² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3746028542 + ... + 3746034711.

It is an arithmetic number, because the mean of its divisors is an integer number (3472571318229).

Almost surely, 2^{23113015135505} is an apocalyptic number.

It is an amenable number.

23113015135505 is a deficient number, since it is larger than the sum of its proper divisors (4667555410327).

23113015135505 is an equidigital number, since it uses as much as digits as its factorization.

23113015135505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7492063875.

The product of its (nonzero) digits is 33750, while the sum is 35.

Adding to 23113015135505 its reverse (50553151031132), we get a palindrome (73666166166637).

The spelling of 23113015135505 in words is "twenty-three trillion, one hundred thirteen billion, fifteen million, one hundred thirty-five thousand, five hundred five".