15211416155012 has 144 divisors (see below), whose sum is σ = 33956339489856. Its totient is φ = 5895824256000.

The previous prime is 15211416154999. The next prime is 15211416155021. The reversal of 15211416155012 is 21055161411251.

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, 1263295712 + ... + 1263307752.

It is an arithmetic number, because the mean of its divisors is an integer number (235807913124).

Almost surely, 2^{15211416155012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15211416155012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16978169744928).

15211416155012 is an abundant number, since it is smaller than the sum of its proper divisors (18744923334844).

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

15211416155012 is a wasteful number, since it uses less digits than its factorization.

15211416155012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15058 (or 15049 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 35.

Adding to 15211416155012 its reverse (21055161411251), we get a palindrome (36266577566263).

The spelling of 15211416155012 in words is "fifteen trillion, two hundred eleven billion, four hundred sixteen million, one hundred fifty-five thousand, twelve".