161301312355430 has 32 divisors (see below), whose sum is σ = 314247628296000. Its totient is φ = 59258124173952.

The previous prime is 161301312355411. The next prime is 161301312355451. The reversal of 161301312355430 is 34553213103161.

It is a super-2 number, since 2×161301312355430² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3117510125 + ... + 3117561864.

It is an arithmetic number, because the mean of its divisors is an integer number (9820238384250).

Almost surely, 2^{161301312355430} is an apocalyptic number.

161301312355430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161301312355430 is a deficient number, since it is larger than the sum of its proper divisors (152946315940570).

161301312355430 is a wasteful number, since it uses less digits than its factorization.

161301312355430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6235072208.

The product of its (nonzero) digits is 97200, while the sum is 38.

Adding to 161301312355430 its reverse (34553213103161), we get a palindrome (195854525458591).

The spelling of 161301312355430 in words is "one hundred sixty-one trillion, three hundred one billion, three hundred twelve million, three hundred fifty-five thousand, four hundred thirty".