165220500155356 has 6 divisors (see below), whose sum is σ = 289135875271880. Its totient is φ = 82610250077676.

The previous prime is 165220500155351. The next prime is 165220500155383. The reversal of 165220500155356 is 653551005022561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165220500155351) by changing a digit.

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 as a sum of consecutive naturals, namely, 20652562519416 + ... + 20652562519423.

Almost surely, 2^{165220500155356} is an apocalyptic number.

It is an amenable number.

165220500155356 is a deficient number, since it is larger than the sum of its proper divisors (123915375116524).

165220500155356 is a wasteful number, since it uses less digits than its factorization.

165220500155356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41305125038843 (or 41305125038841 counting only the distinct ones).

The product of its (nonzero) digits is 1350000, while the sum is 46.

The spelling of 165220500155356 in words is "one hundred sixty-five trillion, two hundred twenty billion, five hundred million, one hundred fifty-five thousand, three hundred fifty-six".