162168090525541 has 4 divisors (see below), whose sum is σ = 170703253184800. Its totient is φ = 153632927866284.

The previous prime is 162168090525533. The next prime is 162168090525599. The reversal of 162168090525541 is 145525090861261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 162168090525541 - 2³ = 162168090525533 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 (162168090525841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4267581329601 + ... + 4267581329638.

It is an arithmetic number, because the mean of its divisors is an integer number (42675813296200).

Almost surely, 2^{162168090525541} is an apocalyptic number.

It is an amenable number.

162168090525541 is a deficient number, since it is larger than the sum of its proper divisors (8535162659259).

162168090525541 is an equidigital number, since it uses as much as digits as its factorization.

162168090525541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8535162659258.

The product of its (nonzero) digits is 5184000, while the sum is 55.

The spelling of 162168090525541 in words is "one hundred sixty-two trillion, one hundred sixty-eight billion, ninety million, five hundred twenty-five thousand, five hundred forty-one".