2115984959631 has 24 divisors (see below), whose sum is σ = 3064997505024. Its totient is φ = 1406699669520.

The previous prime is 2115984959629. The next prime is 2115984959651. The reversal of 2115984959631 is 1369594895112.

2115984959631 is a `hidden beast` number, since 2 + 1 + 1 + 5 + 9 + 8 + 4 + 9 + 596 + 31 = 666.

It is not a de Polignac number, because 2115984959631 - 2¹ = 2115984959629 is a prime.

It is a super-2 number, since 2×2115984959631² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115984959651) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 68974426 + ... + 69005096.

It is an arithmetic number, because the mean of its divisors is an integer number (127708229376).

Almost surely, 2^{2115984959631} is an apocalyptic number.

2115984959631 is a deficient number, since it is larger than the sum of its proper divisors (949012545393).

2115984959631 is a wasteful number, since it uses less digits than its factorization.

2115984959631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51931 (or 51928 counting only the distinct ones).

The product of its digits is 20995200, while the sum is 63.

The spelling of 2115984959631 in words is "two trillion, one hundred fifteen billion, nine hundred eighty-four million, nine hundred fifty-nine thousand, six hundred thirty-one".