12153508081 has 24 divisors (see below), whose sum is σ = 14571127584. Its totient is φ = 10046424960.

The previous prime is 12153508049. The next prime is 12153508121. The reversal of 12153508081 is 18080535121.

It is not a de Polignac number, because 12153508081 - 2⁵ = 12153508049 is a prime.

It is a super-2 number, since 2×12153508081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12153508001) 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, 75765 + ... + 173341.

It is an arithmetic number, because the mean of its divisors is an integer number (607130316).

Almost surely, 2^12153508081 is an apocalyptic number.

12153508081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12153508081 is a deficient number, since it is larger than the sum of its proper divisors (2417619503).

12153508081 is a wasteful number, since it uses less digits than its factorization.

12153508081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97681 (or 97668 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 34.

The spelling of 12153508081 in words is "twelve billion, one hundred fifty-three million, five hundred eight thousand, eighty-one".