10420702561 has 2 divisors, whose sum is σ = 10420702562. Its totient is φ = 10420702560.

The previous prime is 10420702469. The next prime is 10420702577. The reversal of 10420702561 is 16520702401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9831912336 + 588790225 = 99156^2 + 24265^2 .

It is a cyclic number.

It is not a de Polignac number, because 10420702561 - 2¹⁵ = 10420669793 is a prime.

It is not a weakly prime, because it can be changed into another prime (10420702261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210351280 + 5210351281.

It is an arithmetic number, because the mean of its divisors is an integer number (5210351281).

Almost surely, 2^10420702561 is an apocalyptic number.

It is an amenable number.

10420702561 is a deficient number, since it is larger than the sum of its proper divisors (1).

10420702561 is an equidigital number, since it uses as much as digits as its factorization.

10420702561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The spelling of 10420702561 in words is "ten billion, four hundred twenty million, seven hundred two thousand, five hundred sixty-one".