23505645101 has 4 divisors (see below), whose sum is σ = 23606527932. Its totient is φ = 23404762272.

The previous prime is 23505645071. The next prime is 23505645103. The reversal of 23505645101 is 10154650532.

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 3055215076 + 20450430025 = 55274^2 + 143005^2 .

It is a cyclic number.

It is not a de Polignac number, because 23505645101 - 2¹⁰ = 23505644077 is a prime.

It is a super-2 number, since 2×23505645101² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23505645103) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 50441066 + ... + 50441531.

It is an arithmetic number, because the mean of its divisors is an integer number (5901631983).

Almost surely, 2^23505645101 is an apocalyptic number.

It is an amenable number.

23505645101 is a deficient number, since it is larger than the sum of its proper divisors (100882831).

23505645101 is a wasteful number, since it uses less digits than its factorization.

23505645101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100882830.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 23505645101 in words is "twenty-three billion, five hundred five million, six hundred forty-five thousand, one hundred one".