165155100556051 has 4 divisors (see below), whose sum is σ = 165158124155712. Its totient is φ = 165152076956392.

The previous prime is 165155100556031. The next prime is 165155100556057. The reversal of 165155100556051 is 150655001551561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165155100556051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165155100555992 and 165155100556010.

It is not an unprimeable number, because it can be changed into a prime (165155100556057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1511717896 + ... + 1511827141.

It is an arithmetic number, because the mean of its divisors is an integer number (41289531038928).

Almost surely, 2^{165155100556051} is an apocalyptic number.

165155100556051 is a deficient number, since it is larger than the sum of its proper divisors (3023599661).

165155100556051 is an equidigital number, since it uses as much as digits as its factorization.

165155100556051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023599660.

The product of its (nonzero) digits is 562500, while the sum is 46.

The spelling of 165155100556051 in words is "one hundred sixty-five trillion, one hundred fifty-five billion, one hundred million, five hundred fifty-six thousand, fifty-one".