66055480365 has 32 divisors (see below), whose sum is σ = 124952244480. Its totient is φ = 29155521024.

The previous prime is 66055480343. The next prime is 66055480369. The reversal of 66055480365 is 56308455066.

66055480365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66055480365 - 2¹⁰ = 66055479341 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66055480369) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10843504 + ... + 10849593.

It is an arithmetic number, because the mean of its divisors is an integer number (3904757640).

Almost surely, 2^66055480365 is an apocalyptic number.

It is an amenable number.

66055480365 is a deficient number, since it is larger than the sum of its proper divisors (58896764115).

66055480365 is a wasteful number, since it uses less digits than its factorization.

66055480365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21693141.

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 66055480365 in words is "sixty-six billion, fifty-five million, four hundred eighty thousand, three hundred sixty-five".