10216420993 has 2 divisors, whose sum is σ = 10216420994. Its totient is φ = 10216420992.

The previous prime is 10216420987. The next prime is 10216421053. The reversal of 10216420993 is 39902461201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8935353729 + 1281067264 = 94527^2 + 35792^2 .

It is a cyclic number.

It is not a de Polignac number, because 10216420993 - 2³³ = 1626486401 is a prime.

It is a super-2 number, since 2×10216420993² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10216420693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5108210496 + 5108210497.

It is an arithmetic number, because the mean of its divisors is an integer number (5108210497).

Almost surely, 2^10216420993 is an apocalyptic number.

It is an amenable number.

10216420993 is a deficient number, since it is larger than the sum of its proper divisors (1).

10216420993 is an equidigital number, since it uses as much as digits as its factorization.

10216420993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 10216420993 in words is "ten billion, two hundred sixteen million, four hundred twenty thousand, nine hundred ninety-three".