21202948763 has 2 divisors, whose sum is σ = 21202948764. Its totient is φ = 21202948762.

The previous prime is 21202948721. The next prime is 21202948817. The reversal of 21202948763 is 36784920212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21202948763 is a prime.

It is not a weakly prime, because it can be changed into another prime (21202948163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601474381 + 10601474382.

It is an arithmetic number, because the mean of its divisors is an integer number (10601474382).

Almost surely, 2^21202948763 is an apocalyptic number.

21202948763 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202948763 is an equidigital number, since it uses as much as digits as its factorization.

21202948763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 21202948763 in words is "twenty-one billion, two hundred two million, nine hundred forty-eight thousand, seven hundred sixty-three".