65221552055 has 8 divisors (see below), whose sum is σ = 85380940944. Its totient is φ = 47433856000.

The previous prime is 65221552049. The next prime is 65221552063. The reversal of 65221552055 is 55025512256.

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

It is not a de Polignac number, because 65221552055 - 2¹⁴ = 65221535671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592923146 + ... + 592923255.

It is an arithmetic number, because the mean of its divisors is an integer number (10672617618).

Almost surely, 2^65221552055 is an apocalyptic number.

65221552055 is a deficient number, since it is larger than the sum of its proper divisors (20159388889).

65221552055 is a wasteful number, since it uses less digits than its factorization.

65221552055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185846417.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 65221552055 in words is "sixty-five billion, two hundred twenty-one million, five hundred fifty-two thousand, fifty-five".