23120511005 has 8 divisors (see below), whose sum is σ = 27749628600. Its totient is φ = 18493065216.

The previous prime is 23120510983. The next prime is 23120511041. The reversal of 23120511005 is 50011502132.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 275095396 + 22845415609 = 16586^2 + 151147^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 23120511005 - 2¹² = 23120506909 is a prime.

It is a super-2 number, since 2×23120511005² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387320 + ... + 443009.

It is an arithmetic number, because the mean of its divisors is an integer number (3468703575).

Almost surely, 2^23120511005 is an apocalyptic number.

It is an amenable number.

23120511005 is a deficient number, since it is larger than the sum of its proper divisors (4629117595).

23120511005 is an equidigital number, since it uses as much as digits as its factorization.

23120511005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835903.

The product of its (nonzero) digits is 300, while the sum is 20.

The spelling of 23120511005 in words is "twenty-three billion, one hundred twenty million, five hundred eleven thousand, five".