161249034844 has 6 divisors (see below), whose sum is σ = 282185810984. Its totient is φ = 80624517420.

The previous prime is 161249034841. The next prime is 161249034883. The reversal of 161249034844 is 448430942161.

It is a super-2 number, since 2×161249034844² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161249034794 and 161249034803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161249034841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20156129352 + ... + 20156129359.

Almost surely, 2^161249034844 is an apocalyptic number.

It is an amenable number.

161249034844 is a deficient number, since it is larger than the sum of its proper divisors (120936776140).

161249034844 is a wasteful number, since it uses less digits than its factorization.

161249034844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40312258715 (or 40312258713 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 161249034844 in words is "one hundred sixty-one billion, two hundred forty-nine million, thirty-four thousand, eight hundred forty-four".