161382538222855 has 8 divisors (see below), whose sum is σ = 193662830869200. Its totient is φ = 129103507243776.

The previous prime is 161382538222837. The next prime is 161382538222903. The reversal of 161382538222855 is 558222835283161.

161382538222855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 161382538222855 - 2³³ = 161373948288263 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161382538222793 and 161382538222802.

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, 315135385 + ... + 315647074.

It is an arithmetic number, because the mean of its divisors is an integer number (24207853858650).

Almost surely, 2^{161382538222855} is an apocalyptic number.

161382538222855 is a deficient number, since it is larger than the sum of its proper divisors (32280292646345).

161382538222855 is an equidigital number, since it uses as much as digits as its factorization.

161382538222855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630833633.

The product of its digits is 55296000, while the sum is 61.

The spelling of 161382538222855 in words is "one hundred sixty-one trillion, three hundred eighty-two billion, five hundred thirty-eight million, two hundred twenty-two thousand, eight hundred fifty-five".