20482636409 has 2 divisors, whose sum is σ = 20482636410. Its totient is φ = 20482636408.

The previous prime is 20482636373. The next prime is 20482636451. The reversal of 20482636409 is 90463628402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18785443600 + 1697192809 = 137060^2 + 41197^2 .

It is a cyclic number.

It is not a de Polignac number, because 20482636409 - 2¹⁶ = 20482570873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20482636409.

It is not a weakly prime, because it can be changed into another prime (20482656409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10241318204 + 10241318205.

It is an arithmetic number, because the mean of its divisors is an integer number (10241318205).

Almost surely, 2^20482636409 is an apocalyptic number.

It is an amenable number.

20482636409 is a deficient number, since it is larger than the sum of its proper divisors (1).

20482636409 is an equidigital number, since it uses as much as digits as its factorization.

20482636409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 20482636409 in words is "twenty billion, four hundred eighty-two million, six hundred thirty-six thousand, four hundred nine".