16772045986 has 4 divisors (see below), whose sum is σ = 25158068982. Its totient is φ = 8386022992.

The previous prime is 16772045981. The next prime is 16772045987. The reversal of 16772045986 is 68954027761.

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., 11757281761 + 5014764225 = 108431^2 + 70815^2 .

It is not an unprimeable number, because it can be changed into a prime (16772045981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4193011495 + ... + 4193011498.

Almost surely, 2^16772045986 is an apocalyptic number.

16772045986 is a deficient number, since it is larger than the sum of its proper divisors (8386022996).

16772045986 is an equidigital number, since it uses as much as digits as its factorization.

16772045986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8386022995.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 16772045986 in words is "sixteen billion, seven hundred seventy-two million, forty-five thousand, nine hundred eighty-six".