161112243101550 has 96 divisors (see below), whose sum is σ = 449002040030208. Its totient is φ = 37934120104320.

The previous prime is 161112243101549. The next prime is 161112243101609. The reversal of 161112243101550 is 55101342211161.

It is a super-2 number, since 2×161112243101550² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1796078262 + ... + 1796167961.

It is an arithmetic number, because the mean of its divisors is an integer number (4677104583648).

Almost surely, 2^{161112243101550} is an apocalyptic number.

161112243101550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161112243101550 is an abundant number, since it is smaller than the sum of its proper divisors (287889796928658).

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

161112243101550 is a wasteful number, since it uses less digits than its factorization.

161112243101550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3592246274 (or 3592246269 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 33.

The spelling of 161112243101550 in words is "one hundred sixty-one trillion, one hundred twelve billion, two hundred forty-three million, one hundred one thousand, five hundred fifty".