161432254402 has 16 divisors (see below), whose sum is σ = 243620657280. Its totient is φ = 80225457408.

The previous prime is 161432254397. The next prime is 161432254421. The reversal of 161432254402 is 204452234161.

161432254402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161432254402² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 6593299 + ... + 6617737.

It is an arithmetic number, because the mean of its divisors is an integer number (15226291080).

Almost surely, 2^161432254402 is an apocalyptic number.

161432254402 is a deficient number, since it is larger than the sum of its proper divisors (82188402878).

161432254402 is a wasteful number, since it uses less digits than its factorization.

161432254402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44385.

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 161432254402 its reverse (204452234161), we get a palindrome (365884488563).

The spelling of 161432254402 in words is "one hundred sixty-one billion, four hundred thirty-two million, two hundred fifty-four thousand, four hundred two".