16905772064002 has 4 divisors (see below), whose sum is σ = 25358658096006. Its totient is φ = 8452886032000.

The previous prime is 16905772063997. The next prime is 16905772064009. The reversal of 16905772064002 is 20046027750961.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15226314172281 + 1679457891721 = 3902091^2 + 1295939^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (16905772064009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4226443015999 + ... + 4226443016002.

Almost surely, 2^{16905772064002} is an apocalyptic number.

16905772064002 is a deficient number, since it is larger than the sum of its proper divisors (8452886032004).

16905772064002 is an equidigital number, since it uses as much as digits as its factorization.

16905772064002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8452886032003.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 16905772064002 in words is "sixteen trillion, nine hundred five billion, seven hundred seventy-two million, sixty-four thousand, two".