165656516420429 has 16 divisors (see below), whose sum is σ = 167345926235136. Its totient is φ = 163969740633600.

The previous prime is 165656516420383. The next prime is 165656516420531. The reversal of 165656516420429 is 924024615656561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165656516420429 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 (165656516420029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2335753889 + ... + 2335824809.

It is an arithmetic number, because the mean of its divisors is an integer number (10459120389696).

Almost surely, 2^{165656516420429} is an apocalyptic number.

It is an amenable number.

165656516420429 is a deficient number, since it is larger than the sum of its proper divisors (1689409814707).

165656516420429 is a wasteful number, since it uses less digits than its factorization.

165656516420429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89156.

The product of its (nonzero) digits is 93312000, while the sum is 62.

The spelling of 165656516420429 in words is "one hundred sixty-five trillion, six hundred fifty-six billion, five hundred sixteen million, four hundred twenty thousand, four hundred twenty-nine".