16451601555 has 32 divisors (see below), whose sum is σ = 26945639424. Its totient is φ = 8566661376.

The previous prime is 16451601527. The next prime is 16451601557. The reversal of 16451601555 is 55510615461.

16451601555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16451601555 - 2⁷ = 16451601427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16451601557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2613622 + ... + 2619908.

It is an arithmetic number, because the mean of its divisors is an integer number (842051232).

Almost surely, 2^16451601555 is an apocalyptic number.

16451601555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16451601555 is a deficient number, since it is larger than the sum of its proper divisors (10494037869).

16451601555 is a wasteful number, since it uses less digits than its factorization.

16451601555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10395.

The product of its (nonzero) digits is 90000, while the sum is 39.

The spelling of 16451601555 in words is "sixteen billion, four hundred fifty-one million, six hundred one thousand, five hundred fifty-five".