161305354622055 has 96 divisors (see below), whose sum is σ = 300601914782400. Its totient is φ = 73647179655168.

The previous prime is 161305354622039. The next prime is 161305354622063. The reversal of 161305354622055 is 550226453503161.

161305354622055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161305354622055 - 2⁴ = 161305354622039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161305354621995 and 161305354622013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2420043109 + ... + 2420109761.

It is an arithmetic number, because the mean of its divisors is an integer number (3131269945650).

Almost surely, 2^{161305354622055} is an apocalyptic number.

161305354622055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161305354622055 is a deficient number, since it is larger than the sum of its proper divisors (139296560160345).

161305354622055 is a wasteful number, since it uses less digits than its factorization.

161305354622055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70753 (or 70746 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 48.

The spelling of 161305354622055 in words is "one hundred sixty-one trillion, three hundred five billion, three hundred fifty-four million, six hundred twenty-two thousand, fifty-five".