16455263664 has 80 divisors (see below), whose sum is σ = 48754157312. Its totient is φ = 4684863744.

The previous prime is 16455263647. The next prime is 16455263689. The reversal of 16455263664 is 46636255461.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8562 + ... + 181614.

Almost surely, 2^16455263664 is an apocalyptic number.

16455263664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16455263664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24377078656).

16455263664 is an abundant number, since it is smaller than the sum of its proper divisors (32298893648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16455263664 is a wasteful number, since it uses less digits than its factorization.

16455263664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173354 (or 173348 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 48.

The spelling of 16455263664 in words is "sixteen billion, four hundred fifty-five million, two hundred sixty-three thousand, six hundred sixty-four".