2111644102504 has 8 divisors (see below), whose sum is σ = 3959332692210. Its totient is φ = 1055822051248.

The previous prime is 2111644102489. The next prime is 2111644102537. The reversal of 2111644102504 is 4052014461112.

It can be written as a sum of positive squares in only one way, i.e., 1790270760100 + 321373342404 = 1338010^2 + 566898^2 .

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, 131977756399 + ... + 131977756414.

Almost surely, 2^{2111644102504} is an apocalyptic number.

It is an amenable number.

2111644102504 is a deficient number, since it is larger than the sum of its proper divisors (1847688589706).

2111644102504 is a wasteful number, since it uses less digits than its factorization.

2111644102504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263955512819 (or 263955512815 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

Adding to 2111644102504 its reverse (4052014461112), we get a palindrome (6163658563616).

The spelling of 2111644102504 in words is "two trillion, one hundred eleven billion, six hundred forty-four million, one hundred two thousand, five hundred four".