16464636674 has 4 divisors (see below), whose sum is σ = 24696955014. Its totient is φ = 8232318336.

The previous prime is 16464636673. The next prime is 16464636757. The reversal of 16464636674 is 47663646461.

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., 9683937649 + 6780699025 = 98407^2 + 82345^2 .

It is not an unprimeable number, because it can be changed into a prime (16464636673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4116159167 + ... + 4116159170.

Almost surely, 2^16464636674 is an apocalyptic number.

16464636674 is a deficient number, since it is larger than the sum of its proper divisors (8232318340).

16464636674 is an equidigital number, since it uses as much as digits as its factorization.

16464636674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8232318339.

The product of its digits is 10450944, while the sum is 53.

The spelling of 16464636674 in words is "sixteen billion, four hundred sixty-four million, six hundred thirty-six thousand, six hundred seventy-four".