66050560556555 has 8 divisors (see below), whose sum is σ = 79412222714352. Its totient is φ = 52739415080928.

The previous prime is 66050560556543. The next prime is 66050560556587. The reversal of 66050560556555 is 55565506505066.

It is a happy number.

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 66050560556555 - 2²⁶ = 66050493447691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66050560556494 and 66050560556503.

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, 12629167664 + ... + 12629172893.

It is an arithmetic number, because the mean of its divisors is an integer number (9926527839294).

Almost surely, 2^{66050560556555} is an apocalyptic number.

66050560556555 is a deficient number, since it is larger than the sum of its proper divisors (13361662157797).

66050560556555 is a wasteful number, since it uses less digits than its factorization.

66050560556555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25258341085.

The product of its (nonzero) digits is 101250000, while the sum is 59.

The spelling of 66050560556555 in words is "sixty-six trillion, fifty billion, five hundred sixty million, five hundred fifty-six thousand, five hundred fifty-five".