21072630367 has 2 divisors, whose sum is σ = 21072630368. Its totient is φ = 21072630366.

The previous prime is 21072630343. The next prime is 21072630419. The reversal of 21072630367 is 76303627012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21072630367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21072630307) 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 as a sum of consecutive naturals, namely, 10536315183 + 10536315184.

It is an arithmetic number, because the mean of its divisors is an integer number (10536315184).

Almost surely, 2^21072630367 is an apocalyptic number.

21072630367 is a deficient number, since it is larger than the sum of its proper divisors (1).

21072630367 is an equidigital number, since it uses as much as digits as its factorization.

21072630367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 37.

The spelling of 21072630367 in words is "twenty-one billion, seventy-two million, six hundred thirty thousand, three hundred sixty-seven".