20416774013 has 2 divisors, whose sum is σ = 20416774014. Its totient is φ = 20416774012.

The previous prime is 20416773973. The next prime is 20416774031. The reversal of 20416774013 is 31047761402.

Together with next prime (20416774031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19226040964 + 1190733049 = 138658^2 + 34507^2 .

It is a cyclic number.

It is not a de Polignac number, because 20416774013 - 2⁸ = 20416773757 is a prime.

It is a super-2 number, since 2×20416774013² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20416774043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10208387006 + 10208387007.

It is an arithmetic number, because the mean of its divisors is an integer number (10208387007).

Almost surely, 2^20416774013 is an apocalyptic number.

It is an amenable number.

20416774013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20416774013 is an equidigital number, since it uses as much as digits as its factorization.

20416774013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 20416774013 in words is "twenty billion, four hundred sixteen million, seven hundred seventy-four thousand, thirteen".