10202099849857 has 2 divisors, whose sum is σ = 10202099849858. Its totient is φ = 10202099849856.

The previous prime is 10202099849833. The next prime is 10202099849897. The reversal of 10202099849857 is 75894899020201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8040491251776 + 2161608598081 = 2835576^2 + 1470241^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202099849857 - 2⁴³ = 1406006827649 is a prime.

It is not a weakly prime, because it can be changed into another prime (10202099849827) 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, 5101049924928 + 5101049924929.

It is an arithmetic number, because the mean of its divisors is an integer number (5101049924929).

Almost surely, 2^{10202099849857} is an apocalyptic number.

It is an amenable number.

10202099849857 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202099849857 is an equidigital number, since it uses as much as digits as its factorization.

10202099849857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26127360, while the sum is 64.

The spelling of 10202099849857 in words is "ten trillion, two hundred two billion, ninety-nine million, eight hundred forty-nine thousand, eight hundred fifty-seven".