165115610722151 has 4 divisors (see below), whose sum is σ = 165117809905032. Its totient is φ = 165113411539272.

The previous prime is 165115610722141. The next prime is 165115610722267. The reversal of 165115610722151 is 151227016511561.

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

It is a cyclic number.

It is not a de Polignac number, because 165115610722151 - 2⁴⁶ = 94746866544487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165115610722141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1099478816 + ... + 1099628981.

It is an arithmetic number, because the mean of its divisors is an integer number (41279452476258).

Almost surely, 2^{165115610722151} is an apocalyptic number.

165115610722151 is a deficient number, since it is larger than the sum of its proper divisors (2199182881).

165115610722151 is an equidigital number, since it uses as much as digits as its factorization.

165115610722151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2199182880.

The product of its (nonzero) digits is 126000, while the sum is 44.

The spelling of 165115610722151 in words is "one hundred sixty-five trillion, one hundred fifteen billion, six hundred ten million, seven hundred twenty-two thousand, one hundred fifty-one".