165605015454056 has 64 divisors (see below), whose sum is σ = 323964086265600. Its totient is φ = 79287895602432.

The previous prime is 165605015454013. The next prime is 165605015454071. The reversal of 165605015454056 is 650454510506561.

It is a super-2 number, since 2×165605015454056² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165605015453989 and 165605015454007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17294705 + ... + 25106111.

It is an arithmetic number, because the mean of its divisors is an integer number (5061938847900).

Almost surely, 2^{165605015454056} is an apocalyptic number.

It is an amenable number.

165605015454056 is a deficient number, since it is larger than the sum of its proper divisors (158359070811544).

165605015454056 is a wasteful number, since it uses less digits than its factorization.

165605015454056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7812586 (or 7812582 counting only the distinct ones).

The product of its (nonzero) digits is 10800000, while the sum is 53.

The spelling of 165605015454056 in words is "one hundred sixty-five trillion, six hundred five billion, fifteen million, four hundred fifty-four thousand, fifty-six".