165455661424 has 10 divisors (see below), whose sum is σ = 320570344040. Its totient is φ = 82727830704.

The previous prime is 165455661391. The next prime is 165455661443. The reversal of 165455661424 is 424166554561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5170489404 + ... + 5170489435.

It is an arithmetic number, because the mean of its divisors is an integer number (32057034404).

Almost surely, 2^165455661424 is an apocalyptic number.

It is an amenable number.

165455661424 is a deficient number, since it is larger than the sum of its proper divisors (155114682616).

165455661424 is a wasteful number, since it uses less digits than its factorization.

165455661424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10340978847 (or 10340978841 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 49.

The spelling of 165455661424 in words is "one hundred sixty-five billion, four hundred fifty-five million, six hundred sixty-one thousand, four hundred twenty-four".