162550921905 has 56 divisors (see below), whose sum is σ = 292545559680. Its totient is φ = 86667835680.

The previous prime is 162550921903. The next prime is 162550921909. The reversal of 162550921905 is 509129055261.

162550921905 is a `hidden beast` number, since 1 + 6 + 2 + 550 + 9 + 2 + 1 + 90 + 5 = 666.

162550921905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 162550921905 - 2¹ = 162550921903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (162550921903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 23247960 + ... + 23254950.

Almost surely, 2^162550921905 is an apocalyptic number.

162550921905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

162550921905 is a deficient number, since it is larger than the sum of its proper divisors (129994637775).

162550921905 is an frugal number, since it uses more digits than its factorization.

162550921905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13393 (or 13378 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 162550921905 in words is "one hundred sixty-two billion, five hundred fifty million, nine hundred twenty-one thousand, nine hundred five".