21349468533 has 8 divisors (see below), whose sum is σ = 29003051808. Its totient is φ = 13964432144.

The previous prime is 21349468499. The next prime is 21349468537. The reversal of 21349468533 is 33586494312.

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 21349468533 - 2¹⁰ = 21349467509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21349468537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67136535 + ... + 67136852.

It is an arithmetic number, because the mean of its divisors is an integer number (3625381476).

Almost surely, 2^21349468533 is an apocalyptic number.

It is an amenable number.

21349468533 is a deficient number, since it is larger than the sum of its proper divisors (7653583275).

21349468533 is a wasteful number, since it uses less digits than its factorization.

21349468533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134273443.

The product of its digits is 1866240, while the sum is 48.

The spelling of 21349468533 in words is "twenty-one billion, three hundred forty-nine million, four hundred sixty-eight thousand, five hundred thirty-three".