12315222161544 has 32 divisors (see below), whose sum is σ = 32599117487520. Its totient is φ = 3863599109376.

The previous prime is 12315222161533. The next prime is 12315222161551. The reversal of 12315222161544 is 44516122251321.

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, 15092183614 + ... + 15092184429.

It is an arithmetic number, because the mean of its divisors is an integer number (1018722421485).

Almost surely, 2^{12315222161544} is an apocalyptic number.

It is an amenable number.

12315222161544 is an abundant number, since it is smaller than the sum of its proper divisors (20283895325976).

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

12315222161544 is a wasteful number, since it uses less digits than its factorization.

12315222161544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30184368069 (or 30184368065 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The spelling of 12315222161544 in words is "twelve trillion, three hundred fifteen billion, two hundred twenty-two million, one hundred sixty-one thousand, five hundred forty-four".