21141798555393 has 12 divisors (see below), whose sum is σ = 30956484339300. Its totient is φ = 13901456583936.

The previous prime is 21141798555359. The next prime is 21141798555403. The reversal of 21141798555393 is 39355589714112.

It is a happy number.

21141798555393 is a `hidden beast` number, since 2 + 1 + 1 + 4 + 1 + 7 + 98 + 5 + 5 + 539 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5763110819904 + 15378687735489 = 2400648^2 + 3921567^2 .

It is not a de Polignac number, because 21141798555393 - 2³³ = 21133208620801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21141798555393.

It is not an unprimeable number, because it can be changed into a prime (21141798555313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16089648168 + ... + 16089649481.

It is an arithmetic number, because the mean of its divisors is an integer number (2579707028275).

Almost surely, 2^{21141798555393} is an apocalyptic number.

It is an amenable number.

21141798555393 is a deficient number, since it is larger than the sum of its proper divisors (9814685783907).

21141798555393 is a wasteful number, since it uses less digits than its factorization.

21141798555393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32179297728 (or 32179297725 counting only the distinct ones).

The product of its digits is 40824000, while the sum is 63.

The spelling of 21141798555393 in words is "twenty-one trillion, one hundred forty-one billion, seven hundred ninety-eight million, five hundred fifty-five thousand, three hundred ninety-three".