21410676437 has 2 divisors, whose sum is σ = 21410676438. Its totient is φ = 21410676436.

The previous prime is 21410676383. The next prime is 21410676451. The reversal of 21410676437 is 73467601412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17654702641 + 3755973796 = 132871^2 + 61286^2 .

It is a cyclic number.

It is not a de Polignac number, because 21410676437 - 2⁸ = 21410676181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21410676394 and 21410676403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21410666437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10705338218 + 10705338219.

It is an arithmetic number, because the mean of its divisors is an integer number (10705338219).

Almost surely, 2^21410676437 is an apocalyptic number.

It is an amenable number.

21410676437 is a deficient number, since it is larger than the sum of its proper divisors (1).

21410676437 is an equidigital number, since it uses as much as digits as its factorization.

21410676437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 21410676437 in words is "twenty-one billion, four hundred ten million, six hundred seventy-six thousand, four hundred thirty-seven".