23533522069 has 24 divisors (see below), whose sum is σ = 25272815400. Its totient is φ = 21885292800.

The previous prime is 23533522057. The next prime is 23533522087. The reversal of 23533522069 is 96022533532.

It can be written as a sum of positive squares in 12 ways, for example, as 410670225 + 23122851844 = 20265^2 + 152062^2 .

It is not a de Polignac number, because 23533522069 - 2¹³ = 23533513877 is a prime.

It is a super-2 number, since 2×23533522069² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23533526069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4006867 + ... + 4012735.

It is an arithmetic number, because the mean of its divisors is an integer number (1053033975).

Almost surely, 2^23533522069 is an apocalyptic number.

23533522069 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

23533522069 is a deficient number, since it is larger than the sum of its proper divisors (1739293331).

23533522069 is a wasteful number, since it uses less digits than its factorization.

23533522069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6073 (or 6036 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 40.

The spelling of 23533522069 in words is "twenty-three billion, five hundred thirty-three million, five hundred twenty-two thousand, sixty-nine".