64532105555 has 4 divisors (see below), whose sum is σ = 77438526672. Its totient is φ = 51625684440.

The previous prime is 64532105467. The next prime is 64532105567. The reversal of 64532105555 is 55550123546.

64532105555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55550123546 = 2 ⋅27775061773.

It is a de Polignac number, because none of the positive numbers 2^k-64532105555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6453210551 + ... + 6453210560.

It is an arithmetic number, because the mean of its divisors is an integer number (19359631668).

Almost surely, 2^64532105555 is an apocalyptic number.

64532105555 is a deficient number, since it is larger than the sum of its proper divisors (12906421117).

64532105555 is a wasteful number, since it uses less digits than its factorization.

64532105555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12906421116.

The product of its (nonzero) digits is 450000, while the sum is 41.

The spelling of 64532105555 in words is "sixty-four billion, five hundred thirty-two million, one hundred five thousand, five hundred fifty-five".