12445354215 has 64 divisors (see below), whose sum is σ = 25323217920. Its totient is φ = 5680886400.

The previous prime is 12445354199. The next prime is 12445354283. The reversal of 12445354215 is 51245354421.

12445354215 is a `hidden beast` number, since 12 + 44 + 53 + 542 + 15 = 666.

It is not a de Polignac number, because 12445354215 - 2⁴ = 12445354199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12445354215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 653052 + ... + 671838.

It is an arithmetic number, because the mean of its divisors is an integer number (395675280).

Almost surely, 2^12445354215 is an apocalyptic number.

12445354215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12445354215 is an abundant number, since it is smaller than the sum of its proper divisors (12877863705).

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

12445354215 is a wasteful number, since it uses less digits than its factorization.

12445354215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19509 (or 19503 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The spelling of 12445354215 in words is "twelve billion, four hundred forty-five million, three hundred fifty-four thousand, two hundred fifteen".