16656336465 has 8 divisors (see below), whose sum is σ = 26650138368. Its totient is φ = 8883379440.

The previous prime is 16656336409. The next prime is 16656336511. The reversal of 16656336465 is 56463365661.

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

It is not a de Polignac number, because 16656336465 - 2¹⁹ = 16655812177 is a prime.

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, 555211201 + ... + 555211230.

It is an arithmetic number, because the mean of its divisors is an integer number (3331267296).

Almost surely, 2^16656336465 is an apocalyptic number.

16656336465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16656336465 is a deficient number, since it is larger than the sum of its proper divisors (9993801903).

16656336465 is a wasteful number, since it uses less digits than its factorization.

16656336465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110422439.

The product of its digits is 6998400, while the sum is 51.

The spelling of 16656336465 in words is "sixteen billion, six hundred fifty-six million, three hundred thirty-six thousand, four hundred sixty-five".