161845266043 has 8 divisors (see below), whose sum is σ = 170748014400. Its totient is φ = 152980975368.

The previous prime is 161845266013. The next prime is 161845266067. The reversal of 161845266043 is 340662548161.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161845266043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161845265984 and 161845266002.

It is not an unprimeable number, because it can be changed into a prime (161845266013) 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, 9605773 + ... + 9622606.

It is an arithmetic number, because the mean of its divisors is an integer number (21343501800).

Almost surely, 2^161845266043 is an apocalyptic number.

161845266043 is a deficient number, since it is larger than the sum of its proper divisors (8902748357).

161845266043 is a wasteful number, since it uses less digits than its factorization.

161845266043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19228841.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 161845266043 in words is "one hundred sixty-one billion, eight hundred forty-five million, two hundred sixty-six thousand, forty-three".