161344604314531 has 8 divisors (see below), whose sum is σ = 176192451508464. Its totient is φ = 146526783102720.

The previous prime is 161344604314529. The next prime is 161344604314561. The reversal of 161344604314531 is 135413406443161.

It is a happy number.

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 161344604314531 - 2¹ = 161344604314529 is a prime.

It is a super-2 number, since 2×161344604314531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161344604314511) 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, 7506484290 + ... + 7506505783.

It is an arithmetic number, because the mean of its divisors is an integer number (22024056438558).

Almost surely, 2^{161344604314531} is an apocalyptic number.

161344604314531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

161344604314531 is a deficient number, since it is larger than the sum of its proper divisors (14847847193933).

161344604314531 is a wasteful number, since it uses less digits than its factorization.

161344604314531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15012991061.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 161344604314531 in words is "one hundred sixty-one trillion, three hundred forty-four billion, six hundred four million, three hundred fourteen thousand, five hundred thirty-one".