165050412252621 has 32 divisors (see below), whose sum is σ = 252620596650240. Its totient is φ = 93896433529344.

The previous prime is 165050412252569. The next prime is 165050412252623. The reversal of 165050412252621 is 126252214050561.

It is not a de Polignac number, because 165050412252621 - 2¹¹ = 165050412250573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165050412252623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32202711 + ... + 36974523.

It is an arithmetic number, because the mean of its divisors is an integer number (7894393645320).

Almost surely, 2^{165050412252621} is an apocalyptic number.

It is an amenable number.

165050412252621 is a deficient number, since it is larger than the sum of its proper divisors (87570184397619).

165050412252621 is a wasteful number, since it uses less digits than its factorization.

165050412252621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4779125.

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 165050412252621 in words is "one hundred sixty-five trillion, fifty billion, four hundred twelve million, two hundred fifty-two thousand, six hundred twenty-one".