161128007788075 has 24 divisors (see below), whose sum is σ = 201120464060208. Its totient is φ = 128051678455680.

The previous prime is 161128007788049. The next prime is 161128007788129. The reversal of 161128007788075 is 570887700821161.

It is not a de Polignac number, because 161128007788075 - 2²³ = 161127999399467 is a prime.

It is a super-2 number, since 2×161128007788075² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21834777 + ... + 28266826.

It is an arithmetic number, because the mean of its divisors is an integer number (8380019335842).

Almost surely, 2^{161128007788075} is an apocalyptic number.

161128007788075 is a deficient number, since it is larger than the sum of its proper divisors (39992456272133).

161128007788075 is a wasteful number, since it uses less digits than its factorization.

161128007788075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50102463 (or 50102458 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 61.

The spelling of 161128007788075 in words is "one hundred sixty-one trillion, one hundred twenty-eight billion, seven million, seven hundred eighty-eight thousand, seventy-five".