20440702753 has 2 divisors, whose sum is σ = 20440702754. Its totient is φ = 20440702752.

The previous prime is 20440702739. The next prime is 20440702831. The reversal of 20440702753 is 35720704402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12635333649 + 7805369104 = 112407^2 + 88348^2 .

It is a cyclic number.

It is not a de Polignac number, because 20440702753 - 2²¹ = 20438605601 is a prime.

It is not a weakly prime, because it can be changed into another prime (20440702453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220351376 + 10220351377.

It is an arithmetic number, because the mean of its divisors is an integer number (10220351377).

Almost surely, 2^20440702753 is an apocalyptic number.

It is an amenable number.

20440702753 is a deficient number, since it is larger than the sum of its proper divisors (1).

20440702753 is an equidigital number, since it uses as much as digits as its factorization.

20440702753 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 34.

The spelling of 20440702753 in words is "twenty billion, four hundred forty million, seven hundred two thousand, seven hundred fifty-three".