16451775600993 has 32 divisors (see below), whose sum is σ = 24675476814720. Its totient is φ = 10967150439648.

The previous prime is 16451775600979. The next prime is 16451775601103. The reversal of 16451775600993 is 39900657715461.

It is a happy number.

16451775600993 is a `hidden beast` number, since 1 + 6 + 4 + 5 + 17 + 7 + 5 + 600 + 9 + 9 + 3 = 666.

It is not a de Polignac number, because 16451775600993 - 2²⁹ = 16451238730081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16451775600993.

It is not an unprimeable number, because it can be changed into a prime (16451775600913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35234646 + ... + 35698512.

It is an arithmetic number, because the mean of its divisors is an integer number (771108650460).

Almost surely, 2^{16451775600993} is an apocalyptic number.

It is an amenable number.

16451775600993 is a deficient number, since it is larger than the sum of its proper divisors (8223701213727).

16451775600993 is an frugal number, since it uses more digits than its factorization.

16451775600993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480105 (or 480087 counting only the distinct ones).

The product of its (nonzero) digits is 42865200, while the sum is 63.

The spelling of 16451775600993 in words is "sixteen trillion, four hundred fifty-one billion, seven hundred seventy-five million, six hundred thousand, nine hundred ninety-three".