16293999881997 has 16 divisors (see below), whose sum is σ = 24153483818880. Its totient is φ = 10856265457536.

The previous prime is 16293999881969. The next prime is 16293999882011. The reversal of 16293999881997 is 79918899939261.

16293999881997 is a `hidden beast` number, since 1 + 6 + 29 + 399 + 9 + 8 + 8 + 199 + 7 = 666.

It is not a de Polignac number, because 16293999881997 - 2¹⁴ = 16293999865613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16293999889997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177762513 + ... + 177854150.

It is an arithmetic number, because the mean of its divisors is an integer number (1509592738680).

Almost surely, 2^{16293999881997} is an apocalyptic number.

It is an amenable number.

16293999881997 is a deficient number, since it is larger than the sum of its proper divisors (7859483936883).

16293999881997 is a wasteful number, since it uses less digits than its factorization.

16293999881997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355618369 (or 355618363 counting only the distinct ones).

The product of its digits is 8571080448, while the sum is 90.

The spelling of 16293999881997 in words is "sixteen trillion, two hundred ninety-three billion, nine hundred ninety-nine million, eight hundred eighty-one thousand, nine hundred ninety-seven".