64455216555 has 8 divisors (see below), whose sum is σ = 103128346512. Its totient is φ = 34376115488.

The previous prime is 64455216509. The next prime is 64455216569. The reversal of 64455216555 is 55561255446.

64455216555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64455216555 - 2¹¹ = 64455214507 is a prime.

It is a super-3 number, since 3×64455216555³ (a number of 33 digits) contains 333 as substring.

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, 2148507204 + ... + 2148507233.

It is an arithmetic number, because the mean of its divisors is an integer number (12891043314).

Almost surely, 2^64455216555 is an apocalyptic number.

64455216555 is a deficient number, since it is larger than the sum of its proper divisors (38673129957).

64455216555 is a wasteful number, since it uses less digits than its factorization.

64455216555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297014445.

The product of its digits is 3600000, while the sum is 48.

The spelling of 64455216555 in words is "sixty-four billion, four hundred fifty-five million, two hundred sixteen thousand, five hundred fifty-five".