161732140006 has 4 divisors (see below), whose sum is σ = 242598210012. Its totient is φ = 80866070002.

The previous prime is 161732139973. The next prime is 161732140013. The reversal of 161732140006 is 600041237161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 600041237161 = 9029 ⋅66457109.

It is a super-2 number, since 2×161732140006² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161732140006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40433035000 + ... + 40433035003.

It is an arithmetic number, because the mean of its divisors is an integer number (60649552503).

Almost surely, 2^161732140006 is an apocalyptic number.

161732140006 is a deficient number, since it is larger than the sum of its proper divisors (80866070006).

161732140006 is an equidigital number, since it uses as much as digits as its factorization.

161732140006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80866070005.

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 161732140006 its reverse (600041237161), we get a palindrome (761773377167).

The spelling of 161732140006 in words is "one hundred sixty-one billion, seven hundred thirty-two million, one hundred forty thousand, six".