21340008733 has 8 divisors (see below), whose sum is σ = 21831207552. Its totient is φ = 20850358176.

The previous prime is 21340008709. The next prime is 21340008757. The reversal of 21340008733 is 33780004312.

It is an interprime number because it is at equal distance from previous prime (21340008709) and next prime (21340008757).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21340008733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21340008695 and 21340008704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21340008433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359160 + ... + 414337.

It is an arithmetic number, because the mean of its divisors is an integer number (2728900944).

Almost surely, 2^21340008733 is an apocalyptic number.

It is an amenable number.

21340008733 is a deficient number, since it is larger than the sum of its proper divisors (491198819).

21340008733 is an equidigital number, since it uses as much as digits as its factorization.

21340008733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774131.

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 21340008733 in words is "twenty-one billion, three hundred forty million, eight thousand, seven hundred thirty-three".