161562453576 has 16 divisors (see below), whose sum is σ = 403906134000. Its totient is φ = 53854151184.

The previous prime is 161562453557. The next prime is 161562453583. The reversal of 161562453576 is 675354265161.

It is a happy number.

It is a super-2 number, since 2×161562453576² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3365884426 + ... + 3365884473.

It is an arithmetic number, because the mean of its divisors is an integer number (25244133375).

Almost surely, 2^161562453576 is an apocalyptic number.

It is an amenable number.

161562453576 is an abundant number, since it is smaller than the sum of its proper divisors (242343680424).

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

161562453576 is a wasteful number, since it uses less digits than its factorization.

161562453576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6731768908 (or 6731768904 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 51.

The spelling of 161562453576 in words is "one hundred sixty-one billion, five hundred sixty-two million, four hundred fifty-three thousand, five hundred seventy-six".