12215156195648 has 336 divisors, whose sum is σ = 30051602380800. Its totient is φ = 4894886707200.

The previous prime is 12215156195633. The next prime is 12215156195663. The reversal of 12215156195648 is 84659165151221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12215156195633) and next prime (12215156195663).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 12215156195593 and 12215156195602.

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, 5786430113 + ... + 5786432223.

It is an arithmetic number, because the mean of its divisors is an integer number (89439292800).

Almost surely, 2^{12215156195648} 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 12215156195648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15025801190400).

12215156195648 is an abundant number, since it is smaller than the sum of its proper divisors (17836446185152).

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

12215156195648 is a wasteful number, since it uses less digits than its factorization.

12215156195648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814 (or 2797 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 56.

The spelling of 12215156195648 in words is "twelve trillion, two hundred fifteen billion, one hundred fifty-six million, one hundred ninety-five thousand, six hundred forty-eight".