16555232265 has 32 divisors (see below), whose sum is σ = 31119209856. Its totient is φ = 7409333760.

The previous prime is 16555232257. The next prime is 16555232293. The reversal of 16555232265 is 56223255561.

It is not a de Polignac number, because 16555232265 - 2³ = 16555232257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3856884 + ... + 3861173.

It is an arithmetic number, because the mean of its divisors is an integer number (972475308).

Almost surely, 2^16555232265 is an apocalyptic number.

16555232265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16555232265 is a deficient number, since it is larger than the sum of its proper divisors (14563977591).

16555232265 is a wasteful number, since it uses less digits than its factorization.

16555232265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7718089.

The product of its digits is 540000, while the sum is 42.

The spelling of 16555232265 in words is "sixteen billion, five hundred fifty-five million, two hundred thirty-two thousand, two hundred sixty-five".