2111504504156 has 24 divisors (see below), whose sum is σ = 3779360316480. Its totient is φ = 1031754028032.

The previous prime is 2111504504141. The next prime is 2111504504191. The reversal of 2111504504156 is 6514054051112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8217761 + ... + 8470808.

It is an arithmetic number, because the mean of its divisors is an integer number (157473346520).

Almost surely, 2^{2111504504156} is an apocalyptic number.

It is an amenable number.

2111504504156 is a deficient number, since it is larger than the sum of its proper divisors (1667855812324).

2111504504156 is a wasteful number, since it uses less digits than its factorization.

2111504504156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16689293 (or 16689291 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 35.

Adding to 2111504504156 its reverse (6514054051112), we get a palindrome (8625558555268).

The spelling of 2111504504156 in words is "two trillion, one hundred eleven billion, five hundred four million, five hundred four thousand, one hundred fifty-six".