161156505510033 has 16 divisors (see below), whose sum is σ = 234599884603392. Its totient is φ = 97591266882000.

The previous prime is 161156505510029. The next prime is 161156505510043. The reversal of 161156505510033 is 330015505651161.

It is not a de Polignac number, because 161156505510033 - 2² = 161156505510029 is a prime.

It is a super-2 number, since 2×161156505510033² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161156505510043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1983521713 + ... + 1983602958.

It is an arithmetic number, because the mean of its divisors is an integer number (14662492787712).

Almost surely, 2^{161156505510033} is an apocalyptic number.

It is an amenable number.

161156505510033 is a deficient number, since it is larger than the sum of its proper divisors (73443379093359).

161156505510033 is a wasteful number, since it uses less digits than its factorization.

161156505510033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967125916.

The product of its (nonzero) digits is 202500, while the sum is 42.

The spelling of 161156505510033 in words is "one hundred sixty-one trillion, one hundred fifty-six billion, five hundred five million, five hundred ten thousand, thirty-three".