2148908116172 has 24 divisors (see below), whose sum is σ = 3906542001600. Its totient is φ = 1033063302656.

The previous prime is 2148908116163. The next prime is 2148908116177. The reversal of 2148908116172 is 2716118098412.

It is a self number, because there is not a number n which added to its sum of digits gives 2148908116172.

It is not an unprimeable number, because it can be changed into a prime (2148908116177) 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, 38727653 + ... + 38783100.

It is an arithmetic number, because the mean of its divisors is an integer number (162772583400).

Almost surely, 2^{2148908116172} is an apocalyptic number.

It is an amenable number.

2148908116172 is a deficient number, since it is larger than the sum of its proper divisors (1757633885428).

2148908116172 is a wasteful number, since it uses less digits than its factorization.

2148908116172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77511025 (or 77511023 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 50.

The spelling of 2148908116172 in words is "two trillion, one hundred forty-eight billion, nine hundred eight million, one hundred sixteen thousand, one hundred seventy-two".