16451503606 has 4 divisors (see below), whose sum is σ = 24677255412. Its totient is φ = 8225751802.

The previous prime is 16451503597. The next prime is 16451503613. The reversal of 16451503606 is 60630515461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60630515461 = 499 ⋅121504039.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4112875900 + ... + 4112875903.

It is an arithmetic number, because the mean of its divisors is an integer number (6169313853).

Almost surely, 2^16451503606 is an apocalyptic number.

16451503606 is a deficient number, since it is larger than the sum of its proper divisors (8225751806).

16451503606 is an equidigital number, since it uses as much as digits as its factorization.

16451503606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8225751805.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 16451503606 in words is "sixteen billion, four hundred fifty-one million, five hundred three thousand, six hundred six".