161840832526550 has 48 divisors (see below), whose sum is σ = 325512755403840. Its totient is φ = 59631966312960.

The previous prime is 161840832526511. The next prime is 161840832526553. The reversal of 161840832526550 is 55625238048161.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161840832526553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2025502385 + ... + 2025582284.

It is an arithmetic number, because the mean of its divisors is an integer number (6781515737580).

Almost surely, 2^{161840832526550} is an apocalyptic number.

161840832526550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161840832526550 is an abundant number, since it is smaller than the sum of its proper divisors (163671922877290).

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

161840832526550 is a wasteful number, since it uses less digits than its factorization.

161840832526550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4051084745 (or 4051084740 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 56.

The spelling of 161840832526550 in words is "one hundred sixty-one trillion, eight hundred forty billion, eight hundred thirty-two million, five hundred twenty-six thousand, five hundred fifty".