16787695203841 has 3 divisors (see below), whose sum is σ = 16787699301121. Its totient is φ = 16787691106562.

The previous prime is 16787695203817. The next prime is 16787695203869. The reversal of 16787695203841 is 14830259678761.

The square root of 16787695203841 is 4097279.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 16787695203841 - 2¹⁷ = 16787695072769 is a prime.

It is a super-2 number, since 2×16787695203841² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16787695203871) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2048640 + ... + 6145918.

It is a 1-persistent number, because it is pandigital, but 2⋅16787695203841 = 33575390407682 is not.

Almost surely, 2^{16787695203841} is an apocalyptic number.

16787695203841 is the 4097279-th square number.

16787695203841 is the 2048640-th centered octagonal number.

It is an amenable number.

16787695203841 is a deficient number, since it is larger than the sum of its proper divisors (4097280).

16787695203841 is an frugal number, since it uses more digits than its factorization.

16787695203841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8194558 (or 4097279 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 67.

The spelling of 16787695203841 in words is "sixteen trillion, seven hundred eighty-seven billion, six hundred ninety-five million, two hundred three thousand, eight hundred forty-one".