161840828053744 has 20 divisors (see below), whose sum is σ = 358361833547824. Its totient is φ = 69360354880128.

The previous prime is 161840828053727. The next prime is 161840828053747. The reversal of 161840828053744 is 447350828048161.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161840828053747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722503696557 + ... + 722503696780.

Almost surely, 2^{161840828053744} is an apocalyptic number.

161840828053744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

161840828053744 is an abundant number, since it is smaller than the sum of its proper divisors (196521005494080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161840828053744 is a wasteful number, since it uses less digits than its factorization.

161840828053744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445007393352 (or 1445007393346 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 61.

The spelling of 161840828053744 in words is "one hundred sixty-one trillion, eight hundred forty billion, eight hundred twenty-eight million, fifty-three thousand, seven hundred forty-four".