161430345623 has 8 divisors (see below), whose sum is σ = 165932078256. Its totient is φ = 156955489600.

The previous prime is 161430345551. The next prime is 161430345631. The reversal of 161430345623 is 326543034161.

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 161430345623 - 2⁸ = 161430345367 is a prime.

It is a super-2 number, since 2×161430345623² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161430345653) 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, 6706973 + ... + 6730998.

It is an arithmetic number, because the mean of its divisors is an integer number (20741509782).

Almost surely, 2^161430345623 is an apocalyptic number.

161430345623 is a deficient number, since it is larger than the sum of its proper divisors (4501732633).

161430345623 is a wasteful number, since it uses less digits than its factorization.

161430345623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13438305.

The product of its (nonzero) digits is 155520, while the sum is 38.

Adding to 161430345623 its reverse (326543034161), we get a palindrome (487973379784).

The spelling of 161430345623 in words is "one hundred sixty-one billion, four hundred thirty million, three hundred forty-five thousand, six hundred twenty-three".