161516056056546 has 16 divisors (see below), whose sum is σ = 323032237545600. Its totient is φ = 53838664446768.

The previous prime is 161516056056451. The next prime is 161516056056559. The reversal of 161516056056546 is 645650650615161.

It is a super-2 number, since 2×161516056056546² (a number of 29 digits) contains 22 as substring.

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, 24657520 + ... + 30512708.

It is an arithmetic number, because the mean of its divisors is an integer number (20189514846600).

Almost surely, 2^{161516056056546} is an apocalyptic number.

161516056056546 is an abundant number, since it is smaller than the sum of its proper divisors (161516181489054).

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

161516056056546 is a wasteful number, since it uses less digits than its factorization.

161516056056546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10452713.

The product of its (nonzero) digits is 19440000, while the sum is 57.

The spelling of 161516056056546 in words is "one hundred sixty-one trillion, five hundred sixteen billion, fifty-six million, fifty-six thousand, five hundred forty-six".