165902409453229 has 8 divisors (see below), whose sum is σ = 166046145513912. Its totient is φ = 165758678910720.

The previous prime is 165902409453223. The next prime is 165902409453233. The reversal of 165902409453229 is 922354904209561.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14352201864900 + 151550207588329 = 3788430^2 + 12310573^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165902409453229 - 2¹³ = 165902409445037 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 (165902409453223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59956257 + ... + 62662249.

It is an arithmetic number, because the mean of its divisors is an integer number (20755768189239).

Almost surely, 2^{165902409453229} is an apocalyptic number.

It is an amenable number.

165902409453229 is a deficient number, since it is larger than the sum of its proper divisors (143736060683).

165902409453229 is a wasteful number, since it uses less digits than its factorization.

165902409453229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759087.

The product of its (nonzero) digits is 41990400, while the sum is 61.

The spelling of 165902409453229 in words is "one hundred sixty-five trillion, nine hundred two billion, four hundred nine million, four hundred fifty-three thousand, two hundred twenty-nine".