161057428213 has 8 divisors (see below), whose sum is σ = 176878202400. Its totient is φ = 145433185680.

The previous prime is 161057428211. The next prime is 161057428219. The reversal of 161057428213 is 312824750161.

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 161057428213 - 2¹ = 161057428211 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 (161057428211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49131195 + ... + 49134472.

It is an arithmetic number, because the mean of its divisors is an integer number (22109775300).

Almost surely, 2^161057428213 is an apocalyptic number.

It is an amenable number.

161057428213 is a deficient number, since it is larger than the sum of its proper divisors (15820774187).

161057428213 is a wasteful number, since it uses less digits than its factorization.

161057428213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98265827.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 161057428213 in words is "one hundred sixty-one billion, fifty-seven million, four hundred twenty-eight thousand, two hundred thirteen".