6455558809 has 8 divisors (see below), whose sum is σ = 7502829120. Its totient is φ = 5439550416.

The previous prime is 6455558797. The next prime is 6455558821. The reversal of 6455558809 is 9088555546.

It is an interprime number because it is at equal distance from previous prime (6455558797) and next prime (6455558821).

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

It is a cyclic number.

It is not a de Polignac number, because 6455558809 - 2¹⁵ = 6455526041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6455558809.

It is not an unprimeable number, because it can be changed into a prime (6455559809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7815034 + ... + 7815859.

It is an arithmetic number, because the mean of its divisors is an integer number (937853640).

Almost surely, 2^6455558809 is an apocalyptic number.

It is an amenable number.

6455558809 is a deficient number, since it is larger than the sum of its proper divisors (1047270311).

6455558809 is a wasteful number, since it uses less digits than its factorization.

6455558809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15630959.

The product of its (nonzero) digits is 8640000, while the sum is 55.

The square root of 6455558809 is about 80346.4922009667. The cubic root of 6455558809 is about 1861.9925854891.

The spelling of 6455558809 in words is "six billion, four hundred fifty-five million, five hundred fifty-eight thousand, eight hundred nine".