23522532661 has 4 divisors (see below), whose sum is σ = 23553121900. Its totient is φ = 23491943424.

The previous prime is 23522532637. The next prime is 23522532673. The reversal of 23522532661 is 16623522532.

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 18825486436 + 4697046225 = 137206^2 + 68535^2 .

It is a cyclic number.

It is not a de Polignac number, because 23522532661 - 2²³ = 23514144053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23522532661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23522532601) 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, 15293466 + ... + 15295003.

It is an arithmetic number, because the mean of its divisors is an integer number (5888280475).

Almost surely, 2^23522532661 is an apocalyptic number.

It is an amenable number.

23522532661 is a deficient number, since it is larger than the sum of its proper divisors (30589239).

23522532661 is an equidigital number, since it uses as much as digits as its factorization.

23522532661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30589238.

The product of its digits is 129600, while the sum is 37.

The spelling of 23522532661 in words is "twenty-three billion, five hundred twenty-two million, five hundred thirty-two thousand, six hundred sixty-one".