161044008655 has 8 divisors (see below), whose sum is σ = 193255422192. Its totient is φ = 128833465728.

The previous prime is 161044008647. The next prime is 161044008667. The reversal of 161044008655 is 556800440161.

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 161044008655 - 2³ = 161044008647 is a prime.

It is a Duffinian number.

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, 302172 + ... + 642958.

It is an arithmetic number, because the mean of its divisors is an integer number (24156927774).

Almost surely, 2^161044008655 is an apocalyptic number.

161044008655 is a deficient number, since it is larger than the sum of its proper divisors (32211413537).

161044008655 is an equidigital number, since it uses as much as digits as its factorization.

161044008655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435305.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 161044008655 in words is "one hundred sixty-one billion, forty-four million, eight thousand, six hundred fifty-five".