10421566733 has 2 divisors, whose sum is σ = 10421566734. Its totient is φ = 10421566732.

The previous prime is 10421566723. The next prime is 10421566741. The reversal of 10421566733 is 33766512401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10209485764 + 212080969 = 101042^2 + 14563^2 .

It is an emirp because it is prime and its reverse (33766512401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10421566733 - 2⁴ = 10421566717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10421566703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210783366 + 5210783367.

It is an arithmetic number, because the mean of its divisors is an integer number (5210783367).

Almost surely, 2^10421566733 is an apocalyptic number.

It is an amenable number.

10421566733 is a deficient number, since it is larger than the sum of its proper divisors (1).

10421566733 is an equidigital number, since it uses as much as digits as its factorization.

10421566733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 10421566733 in words is "ten billion, four hundred twenty-one million, five hundred sixty-six thousand, seven hundred thirty-three".