12157228416 has 64 divisors (see below), whose sum is σ = 32547041280. Its totient is φ = 4020484608.

The previous prime is 12157228361. The next prime is 12157228439. The reversal of 12157228416 is 61482275121.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75876 + ... + 173411.

It is an arithmetic number, because the mean of its divisors is an integer number (508547520).

Almost surely, 2^12157228416 is an apocalyptic number.

12157228416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12157228416 is an abundant number, since it is smaller than the sum of its proper divisors (20389812864).

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

12157228416 is a wasteful number, since it uses less digits than its factorization.

12157228416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249431 (or 249419 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The spelling of 12157228416 in words is "twelve billion, one hundred fifty-seven million, two hundred twenty-eight thousand, four hundred sixteen".