16648901155 has 4 divisors (see below), whose sum is σ = 19978681392. Its totient is φ = 13319120920.

The previous prime is 16648901153. The next prime is 16648901161. The reversal of 16648901155 is 55110984661.

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

It is not a de Polignac number, because 16648901155 - 2¹ = 16648901153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16648901153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1664890111 + ... + 1664890120.

It is an arithmetic number, because the mean of its divisors is an integer number (4994670348).

Almost surely, 2^16648901155 is an apocalyptic number.

16648901155 is a deficient number, since it is larger than the sum of its proper divisors (3329780237).

16648901155 is an equidigital number, since it uses as much as digits as its factorization.

16648901155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3329780236.

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 16648901155 in words is "sixteen billion, six hundred forty-eight million, nine hundred one thousand, one hundred fifty-five".