16989259970810 has 64 divisors (see below), whose sum is σ = 31620449377440. Its totient is φ = 6567813611520.

The previous prime is 16989259970807. The next prime is 16989259970821. The reversal of 16989259970810 is 1807995298961.

It is a Cunningham number, because it is equal to 4121803²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 362381124361 + 16626878846449 = 601981^2 + 4077607^2 .

It is a super-2 number, since 2×16989259970810² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88533446 + ... + 88725134.

Almost surely, 2^{16989259970810} is an apocalyptic number.

16989259970810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16989259970810 is a deficient number, since it is larger than the sum of its proper divisors (14631189406630).

16989259970810 is a wasteful number, since it uses less digits than its factorization.

16989259970810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193763.

The product of its (nonzero) digits is 176359680, while the sum is 74.

The spelling of 16989259970810 in words is "sixteen trillion, nine hundred eighty-nine billion, two hundred fifty-nine million, nine hundred seventy thousand, eight hundred ten".