66005831455 has 8 divisors (see below), whose sum is σ = 79221646800. Its totient is φ = 52794899136.

The previous prime is 66005831447. The next prime is 66005831461. The reversal of 66005831455 is 55413850066.

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 66005831455 - 2³ = 66005831447 is a prime.

It is a congruent number.

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, 1190950 + ... + 1245139.

It is an arithmetic number, because the mean of its divisors is an integer number (9902705850).

Almost surely, 2^66005831455 is an apocalyptic number.

66005831455 is a deficient number, since it is larger than the sum of its proper divisors (13215815345).

66005831455 is a wasteful number, since it uses less digits than its factorization.

66005831455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441513.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 66005831455 in words is "sixty-six billion, five million, eight hundred thirty-one thousand, four hundred fifty-five".