10206245125381 has 2 divisors, whose sum is σ = 10206245125382. Its totient is φ = 10206245125380.

The previous prime is 10206245125343. The next prime is 10206245125469. The reversal of 10206245125381 is 18352154260201.

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., 6867329472481 + 3338915652900 = 2620559^2 + 1827270^2 .

It is an emirp because it is prime and its reverse (18352154260201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10206245125381 - 2³⁷ = 10068806171909 is a prime.

It is a super-2 number, since 2×10206245125381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10206245125331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5103122562690 + 5103122562691.

It is an arithmetic number, because the mean of its divisors is an integer number (5103122562691).

Almost surely, 2^{10206245125381} is an apocalyptic number.

It is an amenable number.

10206245125381 is a deficient number, since it is larger than the sum of its proper divisors (1).

10206245125381 is an equidigital number, since it uses as much as digits as its factorization.

10206245125381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 40.

Adding to 10206245125381 its reverse (18352154260201), we get a palindrome (28558399385582).

The spelling of 10206245125381 in words is "ten trillion, two hundred six billion, two hundred forty-five million, one hundred twenty-five thousand, three hundred eighty-one".