21347435033 has 8 divisors (see below), whose sum is σ = 21496083840. Its totient is φ = 21199300560.

The previous prime is 21347434993. The next prime is 21347435077. The reversal of 21347435033 is 33053474312.

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 21347435033 - 2¹⁴ = 21347418649 is a prime.

It is a super-2 number, since 2×21347435033² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21347434984 and 21347435002.

It is not an unprimeable number, because it can be changed into a prime (21347435633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45098 + ... + 211491.

It is an arithmetic number, because the mean of its divisors is an integer number (2687010480).

Almost surely, 2^21347435033 is an apocalyptic number.

It is an amenable number.

21347435033 is a deficient number, since it is larger than the sum of its proper divisors (148648807).

21347435033 is a wasteful number, since it uses less digits than its factorization.

21347435033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257167.

The product of its (nonzero) digits is 90720, while the sum is 35.

The spelling of 21347435033 in words is "twenty-one billion, three hundred forty-seven million, four hundred thirty-five thousand, thirty-three".