161735088121 has 16 divisors (see below), whose sum is σ = 180753327360. Its totient is φ = 143816567040.

The previous prime is 161735088103. The next prime is 161735088131. The reversal of 161735088121 is 121880537161.

It is a cyclic number.

It is not a de Polignac number, because 161735088121 - 2¹³ = 161735079929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161735088101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563650 + ... + 800731.

It is an arithmetic number, because the mean of its divisors is an integer number (11297082960).

Almost surely, 2^161735088121 is an apocalyptic number.

It is an amenable number.

161735088121 is a deficient number, since it is larger than the sum of its proper divisors (19018239239).

161735088121 is a wasteful number, since it uses less digits than its factorization.

161735088121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364784.

The product of its (nonzero) digits is 80640, while the sum is 43.

The spelling of 161735088121 in words is "one hundred sixty-one billion, seven hundred thirty-five million, eighty-eight thousand, one hundred twenty-one".