161101155106 has 16 divisors (see below), whose sum is σ = 247566502008. Its totient is φ = 78579318400.

The previous prime is 161101155091. The next prime is 161101155109. The reversal of 161101155106 is 601551101161.

It can be written as a sum of positive squares in 4 ways, for example, as 88025549481 + 73075605625 = 296691^2 + 270325^2 .

It is not an unprimeable number, because it can be changed into a prime (161101155109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981036 + ... + 1133416.

Almost surely, 2^161101155106 is an apocalyptic number.

161101155106 is a deficient number, since it is larger than the sum of its proper divisors (86465346902).

161101155106 is a wasteful number, since it uses less digits than its factorization.

161101155106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165317.

The product of its (nonzero) digits is 900, while the sum is 28.

Adding to 161101155106 its reverse (601551101161), we get a palindrome (762652256267).

The spelling of 161101155106 in words is "one hundred sixty-one billion, one hundred one million, one hundred fifty-five thousand, one hundred six".