161156534320126 has 32 divisors (see below), whose sum is σ = 271078704034560. Its totient is φ = 71406097554816.

The previous prime is 161156534320073. The next prime is 161156534320139. The reversal of 161156534320126 is 621023435651161.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 765134946 + ... + 765345541.

It is an arithmetic number, because the mean of its divisors is an integer number (8471209501080).

Almost surely, 2^{161156534320126} is an apocalyptic number.

161156534320126 is a deficient number, since it is larger than the sum of its proper divisors (109922169714434).

161156534320126 is a wasteful number, since it uses less digits than its factorization.

161156534320126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530480688.

The product of its (nonzero) digits is 777600, while the sum is 46.

Adding to 161156534320126 its reverse (621023435651161), we get a palindrome (782179969971287).

The spelling of 161156534320126 in words is "one hundred sixty-one trillion, one hundred fifty-six billion, five hundred thirty-four million, three hundred twenty thousand, one hundred twenty-six".