161605355054 has 32 divisors (see below), whose sum is σ = 285267606624. Its totient is φ = 67692026880.

The previous prime is 161605354991. The next prime is 161605355083. The reversal of 161605355054 is 450553506161.

It is a super-3 number, since 3×161605355054³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306839 + ... + 646034.

It is an arithmetic number, because the mean of its divisors is an integer number (8914612707).

Almost surely, 2^161605355054 is an apocalyptic number.

161605355054 is a deficient number, since it is larger than the sum of its proper divisors (123662251570).

161605355054 is a wasteful number, since it uses less digits than its factorization.

161605355054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953492.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 161605355054 in words is "one hundred sixty-one billion, six hundred five million, three hundred fifty-five thousand, fifty-four".