16455263665 has 8 divisors (see below), whose sum is σ = 20427224040. Its totient is φ = 12710272512.

The previous prime is 16455263647. The next prime is 16455263689. The reversal of 16455263665 is 56636255461.

It can be written as a sum of positive squares in 4 ways, for example, as 1407825441 + 15047438224 = 37521^2 + 122668^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16455263665 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, 56742144 + ... + 56742433.

It is an arithmetic number, because the mean of its divisors is an integer number (2553403005).

Almost surely, 2^16455263665 is an apocalyptic number.

It is an amenable number.

16455263665 is a deficient number, since it is larger than the sum of its proper divisors (3971960375).

16455263665 is a wasteful number, since it uses less digits than its factorization.

16455263665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113484611.

The product of its digits is 3888000, while the sum is 49.

The spelling of 16455263665 in words is "sixteen billion, four hundred fifty-five million, two hundred sixty-three thousand, six hundred sixty-five".