2163981370570 has 16 divisors (see below), whose sum is σ = 3896557151688. Its totient is φ = 865283507200.

The previous prime is 2163981370567. The next prime is 2163981370571. The reversal of 2163981370570 is 750731893612.

It can be written as a sum of positive squares in 4 ways, for example, as 1620368605969 + 543612764601 = 1272937^2 + 737301^2 .

It is not an unprimeable number, because it can be changed into a prime (2163981370571) 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, 38600719 + ... + 38656738.

Almost surely, 2^{2163981370570} is an apocalyptic number.

2163981370570 is a deficient number, since it is larger than the sum of its proper divisors (1732575781118).

2163981370570 is a wasteful number, since it uses less digits than its factorization.

2163981370570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77260265.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The spelling of 2163981370570 in words is "two trillion, one hundred sixty-three billion, nine hundred eighty-one million, three hundred seventy thousand, five hundred seventy".