161500033705 has 16 divisors (see below), whose sum is σ = 194322240000. Its totient is φ = 128852121280.

The previous prime is 161500033703. The next prime is 161500033727. The reversal of 161500033705 is 507330005161.

161500033705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161500033705 - 2¹ = 161500033703 is a prime.

It is a super-2 number, since 2×161500033705² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161500033703) by changing a digit.

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, 6450351 + ... + 6475339.

It is an arithmetic number, because the mean of its divisors is an integer number (12145140000).

Almost surely, 2^161500033705 is an apocalyptic number.

It is an amenable number.

161500033705 is a deficient number, since it is larger than the sum of its proper divisors (32822206295).

161500033705 is a wasteful number, since it uses less digits than its factorization.

161500033705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28424.

The product of its (nonzero) digits is 9450, while the sum is 31.

Adding to 161500033705 its reverse (507330005161), we get a palindrome (668830038866).

The spelling of 161500033705 in words is "one hundred sixty-one billion, five hundred million, thirty-three thousand, seven hundred five".