66551160155 has 8 divisors (see below), whose sum is σ = 79868687712. Its totient is φ = 53236064448.

The previous prime is 66551160133. The next prime is 66551160163. The reversal of 66551160155 is 55106115566.

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 66551160155 - 2²⁸ = 66282724699 is a prime.

It is a Duffinian 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, 547202 + ... + 657671.

It is an arithmetic number, because the mean of its divisors is an integer number (9983585964).

Almost surely, 2^66551160155 is an apocalyptic number.

66551160155 is a deficient number, since it is larger than the sum of its proper divisors (13317527557).

66551160155 is a wasteful number, since it uses less digits than its factorization.

66551160155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215925.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 66551160155 in words is "sixty-six billion, five hundred fifty-one million, one hundred sixty thousand, one hundred fifty-five".