161237761622 has 32 divisors (see below), whose sum is σ = 281300947200. Its totient is φ = 67887864288.

The previous prime is 161237761579. The next prime is 161237761637. The reversal of 161237761622 is 226167732161.

It is a happy number.

161237761622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179597 + ... + 595592.

It is an arithmetic number, because the mean of its divisors is an integer number (8790654600).

Almost surely, 2^161237761622 is an apocalyptic number.

161237761622 is a deficient number, since it is larger than the sum of its proper divisors (120063185578).

161237761622 is a wasteful number, since it uses less digits than its factorization.

161237761622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775460.

The product of its digits is 254016, while the sum is 44.

The spelling of 161237761622 in words is "one hundred sixty-one billion, two hundred thirty-seven million, seven hundred sixty-one thousand, six hundred twenty-two".