2159394982144 has 81 divisors (see below), whose sum is σ = 4465523042617. Its totient is φ = 1042137377792.

The previous prime is 2159394982123. The next prime is 2159394982193. The reversal of 2159394982144 is 4412894939512.

The square root of 2159394982144 is 1469488.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1132334348544 + 1027060633600 = 1064112^2 + 1013440^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 681840849 + ... + 681844015.

Almost surely, 2^{2159394982144} is an apocalyptic number.

2159394982144 is the 1469488-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2159394982144

2159394982144 is an abundant number, since it is smaller than the sum of its proper divisors (2306128060473).

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

2159394982144 is an frugal number, since it uses more digits than its factorization.

2159394982144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6408 (or 3198 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 61.

The spelling of 2159394982144 in words is "two trillion, one hundred fifty-nine billion, three hundred ninety-four million, nine hundred eighty-two thousand, one hundred forty-four".