161091337936948 has 12 divisors (see below), whose sum is σ = 281945521718532. Its totient is φ = 80535474588800.

The previous prime is 161091337936937. The next prime is 161091337936967. The reversal of 161091337936948 is 849639733190161.

161091337936948 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 81229626511504 + 79861711425444 = 9012748^2 + 8936538^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2548559365 + ... + 2548622572.

It is an arithmetic number, because the mean of its divisors is an integer number (23495460143211).

Almost surely, 2^{161091337936948} is an apocalyptic number.

It is an amenable number.

161091337936948 is a deficient number, since it is larger than the sum of its proper divisors (120854183781584).

161091337936948 is a wasteful number, since it uses less digits than its factorization.

161091337936948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097189842 (or 5097189840 counting only the distinct ones).

The product of its (nonzero) digits is 158723712, while the sum is 70.

The spelling of 161091337936948 in words is "one hundred sixty-one trillion, ninety-one billion, three hundred thirty-seven million, nine hundred thirty-six thousand, nine hundred forty-eight".