161393545663422 has 16 divisors (see below), whose sum is σ = 323493408818832. Its totient is φ = 53680128972480.

The previous prime is 161393545663411. The next prime is 161393545663463. The reversal of 161393545663422 is 224366545393161.

It is a super-2 number, since 2×161393545663422² (a number of 29 digits) contains 22 as substring.

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, 29429892529 + ... + 29429898012.

It is an arithmetic number, because the mean of its divisors is an integer number (20218338051177).

Almost surely, 2^{161393545663422} is an apocalyptic number.

161393545663422 is an abundant number, since it is smaller than the sum of its proper divisors (162099863155410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161393545663422 is a wasteful number, since it uses less digits than its factorization.

161393545663422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58859791003.

The product of its digits is 83980800, while the sum is 60.

The spelling of 161393545663422 in words is "one hundred sixty-one trillion, three hundred ninety-three billion, five hundred forty-five million, six hundred sixty-three thousand, four hundred twenty-two".