20783858201 has 2 divisors, whose sum is σ = 20783858202. Its totient is φ = 20783858200.

The previous prime is 20783858191. The next prime is 20783858309. The reversal of 20783858201 is 10285838702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20141286400 + 642571801 = 141920^2 + 25349^2 .

It is a cyclic number.

It is not a de Polignac number, because 20783858201 - 2¹⁴ = 20783841817 is a prime.

It is not a weakly prime, because it can be changed into another prime (20783858401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10391929100 + 10391929101.

It is an arithmetic number, because the mean of its divisors is an integer number (10391929101).

Almost surely, 2^20783858201 is an apocalyptic number.

It is an amenable number.

20783858201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20783858201 is an equidigital number, since it uses as much as digits as its factorization.

20783858201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 20783858201 in words is "twenty billion, seven hundred eighty-three million, eight hundred fifty-eight thousand, two hundred one".