165056240555 has 8 divisors (see below), whose sum is σ = 206679118752. Its totient is φ = 126303905728.

The previous prime is 165056240521. The next prime is 165056240603. The reversal of 165056240555 is 555042650561.

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 165056240555 - 2¹⁶ = 165056175019 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, 717635714 + ... + 717635943.

It is an arithmetic number, because the mean of its divisors is an integer number (25834889844).

Almost surely, 2^165056240555 is an apocalyptic number.

165056240555 is a deficient number, since it is larger than the sum of its proper divisors (41622878197).

165056240555 is a wasteful number, since it uses less digits than its factorization.

165056240555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435271685.

The product of its (nonzero) digits is 900000, while the sum is 44.

The spelling of 165056240555 in words is "one hundred sixty-five billion, fifty-six million, two hundred forty thousand, five hundred fifty-five".