16649510655 has 8 divisors (see below), whose sum is σ = 26639217072. Its totient is φ = 8879739008.

The previous prime is 16649510623. The next prime is 16649510671. The reversal of 16649510655 is 55601594661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16649510655 - 2⁵ = 16649510623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554983674 + ... + 554983703.

It is an arithmetic number, because the mean of its divisors is an integer number (3329902134).

Almost surely, 2^16649510655 is an apocalyptic number.

16649510655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16649510655 is a deficient number, since it is larger than the sum of its proper divisors (9989706417).

16649510655 is a wasteful number, since it uses less digits than its factorization.

16649510655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109967385.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 16649510655 in words is "sixteen billion, six hundred forty-nine million, five hundred ten thousand, six hundred fifty-five".