1881371115016 has 8 divisors (see below), whose sum is σ = 3527570840670. Its totient is φ = 940685557504.

The previous prime is 1881371114999. The next prime is 1881371115053. The reversal of 1881371115016 is 6105111731881.

It can be written as a sum of positive squares in only one way, i.e., 1595285198116 + 286085916900 = 1263046^2 + 534870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117585694681 + ... + 117585694696.

Almost surely, 2^{1881371115016} is an apocalyptic number.

It is an amenable number.

1881371115016 is a deficient number, since it is larger than the sum of its proper divisors (1646199725654).

1881371115016 is a wasteful number, since it uses less digits than its factorization.

1881371115016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235171389383 (or 235171389379 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 43.

Adding to 1881371115016 its reverse (6105111731881), we get a palindrome (7986482846897).

The spelling of 1881371115016 in words is "one trillion, eight hundred eighty-one billion, three hundred seventy-one million, one hundred fifteen thousand, sixteen".