12240553155 has 8 divisors (see below), whose sum is σ = 19584885072. Its totient is φ = 6528295008.

The previous prime is 12240553153. The next prime is 12240553159. The reversal of 12240553155 is 55135504221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12240553155 - 2¹ = 12240553153 is a prime.

It is a super-2 number, since 2×12240553155² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12240553153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408018424 + ... + 408018453.

It is an arithmetic number, because the mean of its divisors is an integer number (2448110634).

Almost surely, 2^12240553155 is an apocalyptic number.

12240553155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12240553155 is a deficient number, since it is larger than the sum of its proper divisors (7344331917).

12240553155 is an equidigital number, since it uses as much as digits as its factorization.

12240553155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816036885.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 12240553155 in words is "twelve billion, two hundred forty million, five hundred fifty-three thousand, one hundred fifty-five".