16981447087653 has 8 divisors (see below), whose sum is σ = 22641995408448. Its totient is φ = 11320931745984.

The previous prime is 16981447087511. The next prime is 16981447087721. The reversal of 16981447087653 is 35678074418961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16981447087653 - 2⁹ = 16981447087141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16981447087853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7017201 + ... + 9121622.

It is an arithmetic number, because the mean of its divisors is an integer number (2830249426056).

Almost surely, 2^{16981447087653} is an apocalyptic number.

It is an amenable number.

16981447087653 is a deficient number, since it is larger than the sum of its proper divisors (5660548320795).

16981447087653 is a wasteful number, since it uses less digits than its factorization.

16981447087653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16489563.

The product of its (nonzero) digits is 243855360, while the sum is 69.

The spelling of 16981447087653 in words is "sixteen trillion, nine hundred eighty-one billion, four hundred forty-seven million, eighty-seven thousand, six hundred fifty-three".