161550335724 has 12 divisors (see below), whose sum is σ = 376950783384. Its totient is φ = 53850111904.

The previous prime is 161550335677. The next prime is 161550335741. The reversal of 161550335724 is 427533055161.

161550335724 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×161550335724² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6731263977 + ... + 6731264000.

It is an arithmetic number, because the mean of its divisors is an integer number (31412565282).

Almost surely, 2^161550335724 is an apocalyptic number.

It is an amenable number.

161550335724 is an abundant number, since it is smaller than the sum of its proper divisors (215400447660).

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

161550335724 is a wasteful number, since it uses less digits than its factorization.

161550335724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13462527984 (or 13462527982 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 161550335724 in words is "one hundred sixty-one billion, five hundred fifty million, three hundred thirty-five thousand, seven hundred twenty-four".