161022545340 has 48 divisors (see below), whose sum is σ = 452849346432. Its totient is φ = 42750181696.

The previous prime is 161022545323. The next prime is 161022545363. The reversal of 161022545340 is 43545220161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5897634 + ... + 5924873.

It is an arithmetic number, because the mean of its divisors is an integer number (9434361384).

Almost surely, 2^161022545340 is an apocalyptic number.

161022545340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161022545340 is an abundant number, since it is smaller than the sum of its proper divisors (291826801092).

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

161022545340 is a wasteful number, since it uses less digits than its factorization.

161022545340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11822746 (or 11822744 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 161022545340 in words is "one hundred sixty-one billion, twenty-two million, five hundred forty-five thousand, three hundred forty".