161504646522 has 8 divisors (see below), whose sum is σ = 323009293056. Its totient is φ = 53834882172.

The previous prime is 161504646487. The next prime is 161504646529. The reversal of 161504646522 is 225646405161.

It is a sphenic number, since it is the product of 3 distinct primes.

161504646522 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (161504646529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13458720538 + ... + 13458720549.

It is an arithmetic number, because the mean of its divisors is an integer number (40376161632).

Almost surely, 2^161504646522 is an apocalyptic number.

161504646522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161504646522 is a wasteful number, since it uses less digits than its factorization.

161504646522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26917441092.

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 161504646522 in words is "one hundred sixty-one billion, five hundred four million, six hundred forty-six thousand, five hundred twenty-two".