15912218144 has 48 divisors (see below), whose sum is σ = 33182237088. Its totient is φ = 7485330432.

The previous prime is 15912218137. The next prime is 15912218149. The reversal of 15912218144 is 44181221951.

It is a junction number, because it is equal to n+sod(n) for n = 15912218098 and 15912218107.

It is not an unprimeable number, because it can be changed into a prime (15912218149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2797127 + ... + 2802809.

It is an arithmetic number, because the mean of its divisors is an integer number (691296606).

Almost surely, 2^15912218144 is an apocalyptic number.

It is an amenable number.

15912218144 is an abundant number, since it is smaller than the sum of its proper divisors (17270018944).

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

15912218144 is a wasteful number, since it uses less digits than its factorization.

15912218144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10857 (or 10849 counting only the distinct ones).

The product of its digits is 23040, while the sum is 38.

The spelling of 15912218144 in words is "fifteen billion, nine hundred twelve million, two hundred eighteen thousand, one hundred forty-four".