21335358195 has 12 divisors (see below), whose sum is σ = 36981287616. Its totient is φ = 11378857680.

The previous prime is 21335358133. The next prime is 21335358221. The reversal of 21335358195 is 59185353312.

21335358195 is a `hidden beast` number, since 2 + 1 + 33 + 535 + 81 + 9 + 5 = 666.

It is not a de Polignac number, because 21335358195 - 2⁹ = 21335357683 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 474119071 = 21335358195 / (2 + 1 + 3 + 3 + 5 + 3 + 5 + 8 + 1 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 21335358195.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237059491 + ... + 237059580.

It is an arithmetic number, because the mean of its divisors is an integer number (3081773968).

Almost surely, 2^21335358195 is an apocalyptic number.

21335358195 is a deficient number, since it is larger than the sum of its proper divisors (15645929421).

21335358195 is a wasteful number, since it uses less digits than its factorization.

21335358195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474119082 (or 474119079 counting only the distinct ones).

The product of its digits is 486000, while the sum is 45.

The spelling of 21335358195 in words is "twenty-one billion, three hundred thirty-five million, three hundred fifty-eight thousand, one hundred ninety-five".