161404505036 has 24 divisors (see below), whose sum is σ = 283019906400. Its totient is φ = 80541820800.

The previous prime is 161404505011. The next prime is 161404505039. The reversal of 161404505036 is 630505404161.

161404505036 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 is a super-2 number, since 2×161404505036² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161404504987 and 161404505005.

It is not an unprimeable number, because it can be changed into a prime (161404505039) 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 7 ways as a sum of consecutive naturals, for example, 4698041 + ... + 4732271.

It is an arithmetic number, because the mean of its divisors is an integer number (11792496100).

Almost surely, 2^161404505036 is an apocalyptic number.

It is an amenable number.

161404505036 is a deficient number, since it is larger than the sum of its proper divisors (121615401364).

161404505036 is a wasteful number, since it uses less digits than its factorization.

161404505036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36545 (or 36543 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 161404505036 its reverse (630505404161), we get a palindrome (791909909197).

The spelling of 161404505036 in words is "one hundred sixty-one billion, four hundred four million, five hundred five thousand, thirty-six".