12265351241550 has 96 divisors (see below), whose sum is σ = 33186158092800. Its totient is φ = 2973166886400.

The previous prime is 12265351241513. The next prime is 12265351241573. The reversal of 12265351241550 is 5514215356221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19572379 + ... + 20189321.

It is an arithmetic number, because the mean of its divisors is an integer number (345689146800).

Almost surely, 2^{12265351241550} is an apocalyptic number.

12265351241550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12265351241550 is an abundant number, since it is smaller than the sum of its proper divisors (20920806851250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12265351241550 is a wasteful number, since it uses less digits than its factorization.

12265351241550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629018 (or 629013 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

Adding to 12265351241550 its reverse (5514215356221), we get a palindrome (17779566597771).

The spelling of 12265351241550 in words is "twelve trillion, two hundred sixty-five billion, three hundred fifty-one million, two hundred forty-one thousand, five hundred fifty".