161654446515622 has 16 divisors (see below), whose sum is σ = 242545744042992. Its totient is φ = 80805866319360.

The previous prime is 161654446515619. The next prime is 161654446515647. The reversal of 161654446515622 is 226515644456161.

It is a super-2 number, since 2×161654446515622² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301243353 + ... + 301779499.

It is an arithmetic number, because the mean of its divisors is an integer number (15159109002687).

Almost surely, 2^{161654446515622} is an apocalyptic number.

161654446515622 is a deficient number, since it is larger than the sum of its proper divisors (80891297527370).

161654446515622 is a wasteful number, since it uses less digits than its factorization.

161654446515622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575703.

The product of its digits is 41472000, while the sum is 58.

The spelling of 161654446515622 in words is "one hundred sixty-one trillion, six hundred fifty-four billion, four hundred forty-six million, five hundred fifteen thousand, six hundred twenty-two".