161340036623 has 8 divisors (see below), whose sum is σ = 169639975296. Its totient is φ = 153147194200.

The previous prime is 161340036589. The next prime is 161340036643. The reversal of 161340036623 is 326630043161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161340036623 - 2²⁴ = 161323259407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161340036643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26770973 + ... + 26776998.

It is an arithmetic number, because the mean of its divisors is an integer number (21204996912).

Almost surely, 2^161340036623 is an apocalyptic number.

161340036623 is a deficient number, since it is larger than the sum of its proper divisors (8299938673).

161340036623 is a wasteful number, since it uses less digits than its factorization.

161340036623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53548125.

The product of its (nonzero) digits is 46656, while the sum is 35.

Adding to 161340036623 its reverse (326630043161), we get a palindrome (487970079784).

The spelling of 161340036623 in words is "one hundred sixty-one billion, three hundred forty million, thirty-six thousand, six hundred twenty-three".