165641037884422 has 32 divisors (see below), whose sum is σ = 264692961227520. Its totient is φ = 77515224544800.

The previous prime is 165641037884351. The next prime is 165641037884437. The reversal of 165641037884422 is 224488730146561.

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, 281336047 + ... + 281924197.

It is an arithmetic number, because the mean of its divisors is an integer number (8271655038360).

Almost surely, 2^{165641037884422} is an apocalyptic number.

165641037884422 is a deficient number, since it is larger than the sum of its proper divisors (99051923343098).

165641037884422 is a wasteful number, since it uses less digits than its factorization.

165641037884422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677548.

The product of its (nonzero) digits is 61931520, while the sum is 61.

The spelling of 165641037884422 in words is "one hundred sixty-five trillion, six hundred forty-one billion, thirty-seven million, eight hundred eighty-four thousand, four hundred twenty-two".