2144922871778 has 16 divisors (see below), whose sum is σ = 3585939167520. Its totient is φ = 956250444096.

The previous prime is 2144922871757. The next prime is 2144922871781. The reversal of 2144922871778 is 8771782294412.

It is a self number, because there is not a number n which added to its sum of digits gives 2144922871778.

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, 1660156376 + ... + 1660157667.

It is an arithmetic number, because the mean of its divisors is an integer number (224121197970).

Almost surely, 2^{2144922871778} is an apocalyptic number.

2144922871778 is a deficient number, since it is larger than the sum of its proper divisors (1441016295742).

2144922871778 is a wasteful number, since it uses less digits than its factorization.

2144922871778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320314081.

The product of its digits is 25288704, while the sum is 62.

The spelling of 2144922871778 in words is "two trillion, one hundred forty-four billion, nine hundred twenty-two million, eight hundred seventy-one thousand, seven hundred seventy-eight".