161005784622 has 32 divisors (see below), whose sum is σ = 323220363648. Its totient is φ = 53467213536.

The previous prime is 161005784609. The next prime is 161005784633. The reversal of 161005784622 is 226487500161.

It is a happy number.

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, 11425593 + ... + 11439675.

It is an arithmetic number, because the mean of its divisors is an integer number (10100636364).

Almost surely, 2^161005784622 is an apocalyptic number.

161005784622 is an abundant number, since it is smaller than the sum of its proper divisors (162214579026).

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

161005784622 is a wasteful number, since it uses less digits than its factorization.

161005784622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21104.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 161005784622 in words is "one hundred sixty-one billion, five million, seven hundred eighty-four thousand, six hundred twenty-two".