20046660401 has 2 divisors, whose sum is σ = 20046660402. Its totient is φ = 20046660400.

The previous prime is 20046660373. The next prime is 20046660409. The reversal of 20046660401 is 10406664002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19994242801 + 52417600 = 141401^2 + 7240^2 .

It is a cyclic number.

It is not a de Polignac number, because 20046660401 - 2¹⁰ = 20046659377 is a prime.

It is not a weakly prime, because it can be changed into another prime (20046660409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10023330200 + 10023330201.

It is an arithmetic number, because the mean of its divisors is an integer number (10023330201).

Almost surely, 2^20046660401 is an apocalyptic number.

It is an amenable number.

20046660401 is a deficient number, since it is larger than the sum of its proper divisors (1).

20046660401 is an equidigital number, since it uses as much as digits as its factorization.

20046660401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 20046660401 in words is "twenty billion, forty-six million, six hundred sixty thousand, four hundred one".