12353087581 has 4 divisors (see below), whose sum is σ = 12355675072. Its totient is φ = 12350500092.

The previous prime is 12353087543. The next prime is 12353087599. The reversal of 12353087581 is 18578035321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12353087581 - 2²³ = 12344698973 is a prime.

It is a super-2 number, since 2×12353087581² (a number of 21 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 (12353087531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286571 + ... + 1296136.

It is an arithmetic number, because the mean of its divisors is an integer number (3088918768).

Almost surely, 2^12353087581 is an apocalyptic number.

It is an amenable number.

12353087581 is a deficient number, since it is larger than the sum of its proper divisors (2587491).

12353087581 is an equidigital number, since it uses as much as digits as its factorization.

12353087581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587490.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 12353087581 in words is "twelve billion, three hundred fifty-three million, eighty-seven thousand, five hundred eighty-one".