165846690405428 has 12 divisors (see below), whose sum is σ = 290231954817252. Its totient is φ = 82923274743360.

The previous prime is 165846690405391. The next prime is 165846690405463. The reversal of 165846690405428 is 824504096648561.

It can be written as a sum of positive squares in 2 ways, for example, as 83276356345744 + 82570334059684 = 9125588^2 + 9086822^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12128975 + ... + 21881622.

It is an arithmetic number, because the mean of its divisors is an integer number (24185996234771).

Almost surely, 2^{165846690405428} is an apocalyptic number.

It is an amenable number.

165846690405428 is a deficient number, since it is larger than the sum of its proper divisors (124385264411824).

165846690405428 is a wasteful number, since it uses less digits than its factorization.

165846690405428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35229682 (or 35229680 counting only the distinct ones).

The product of its (nonzero) digits is 398131200, while the sum is 68.

The spelling of 165846690405428 in words is "one hundred sixty-five trillion, eight hundred forty-six billion, six hundred ninety million, four hundred five thousand, four hundred twenty-eight".