16555272317465 has 16 divisors (see below), whose sum is σ = 22705123916928. Its totient is φ = 11351811505536.

The previous prime is 16555272317447. The next prime is 16555272317483. The reversal of 16555272317465 is 56471327255561.

It is an interprime number because it is at equal distance from previous prime (16555272317447) and next prime (16555272317483).

It is a cyclic number.

It is not a de Polignac number, because 16555272317465 - 2¹² = 16555272313369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6741107 + ... + 8863016.

It is an arithmetic number, because the mean of its divisors is an integer number (1419070244808).

Almost surely, 2^{16555272317465} is an apocalyptic number.

It is an amenable number.

16555272317465 is a deficient number, since it is larger than the sum of its proper divisors (6149851599463).

16555272317465 is a wasteful number, since it uses less digits than its factorization.

16555272317465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15634448.

The product of its digits is 52920000, while the sum is 59.

The spelling of 16555272317465 in words is "sixteen trillion, five hundred fifty-five billion, two hundred seventy-two million, three hundred seventeen thousand, four hundred sixty-five".