21533422515293 has 8 divisors (see below), whose sum is σ = 23202644648736. Its totient is φ = 19866029670000.

The previous prime is 21533422515287. The next prime is 21533422515301. The reversal of 21533422515293 is 39251522433512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21533422515293 - 2⁶ = 21533422515229 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 (21533422505293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457297583 + ... + 457344668.

It is an arithmetic number, because the mean of its divisors is an integer number (2900330581092).

Almost surely, 2^{21533422515293} is an apocalyptic number.

It is an amenable number.

21533422515293 is a deficient number, since it is larger than the sum of its proper divisors (1669222133443).

21533422515293 is a wasteful number, since it uses less digits than its factorization.

21533422515293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914644075.

The product of its digits is 1944000, while the sum is 47.

The spelling of 21533422515293 in words is "twenty-one trillion, five hundred thirty-three billion, four hundred twenty-two million, five hundred fifteen thousand, two hundred ninety-three".