21010006093 has 8 divisors (see below), whose sum is σ = 21524401080. Its totient is φ = 20495704320.

The previous prime is 21010006081. The next prime is 21010006117. The reversal of 21010006093 is 39060001012.

It can be written as a sum of positive squares in 4 ways, for example, as 1204228804 + 19805777289 = 34702^2 + 140733^2 .

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-21010006093 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 (21010006033) 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, 716953 + ... + 745681.

It is an arithmetic number, because the mean of its divisors is an integer number (2690550135).

Almost surely, 2^21010006093 is an apocalyptic number.

It is an amenable number.

21010006093 is a deficient number, since it is larger than the sum of its proper divisors (514394987).

21010006093 is a wasteful number, since it uses less digits than its factorization.

21010006093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46607.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 21010006093 in words is "twenty-one billion, ten million, six thousand, ninety-three".