20356435201 has 2 divisors, whose sum is σ = 20356435202. Its totient is φ = 20356435200.

The previous prime is 20356435147. The next prime is 20356435381. The reversal of 20356435201 is 10253465302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14791424400 + 5565010801 = 121620^2 + 74599^2 .

It is a cyclic number.

It is not a de Polignac number, because 20356435201 - 2⁹ = 20356434689 is a prime.

It is not a weakly prime, because it can be changed into another prime (20396435201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10178217600 + 10178217601.

It is an arithmetic number, because the mean of its divisors is an integer number (10178217601).

Almost surely, 2^20356435201 is an apocalyptic number.

It is an amenable number.

20356435201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20356435201 is an equidigital number, since it uses as much as digits as its factorization.

20356435201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 20356435201 in words is "twenty billion, three hundred fifty-six million, four hundred thirty-five thousand, two hundred one".