20041477012709 has 2 divisors, whose sum is σ = 20041477012710. Its totient is φ = 20041477012708.

The previous prime is 20041477012693. The next prime is 20041477012727. The reversal of 20041477012709 is 90721077414002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18631498882084 + 1409978130625 = 4316422^2 + 1187425^2 .

It is a cyclic number.

It is not a de Polignac number, because 20041477012709 - 2⁴ = 20041477012693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20041477012709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20041477012729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020738506354 + 10020738506355.

It is an arithmetic number, because the mean of its divisors is an integer number (10020738506355).

Almost surely, 2^{20041477012709} is an apocalyptic number.

It is an amenable number.

20041477012709 is a deficient number, since it is larger than the sum of its proper divisors (1).

20041477012709 is an equidigital number, since it uses as much as digits as its factorization.

20041477012709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 44.

The spelling of 20041477012709 in words is "twenty trillion, forty-one billion, four hundred seventy-seven million, twelve thousand, seven hundred nine".