10369551775981 has 2 divisors, whose sum is σ = 10369551775982. Its totient is φ = 10369551775980.

The previous prime is 10369551775927. The next prime is 10369551776027. The reversal of 10369551775981 is 18957715596301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8043746822500 + 2325804953481 = 2836150^2 + 1525059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10369551775981 is a prime.

It is a super-2 number, since 2×10369551775981² (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 (10369551775381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5184775887990 + 5184775887991.

It is an arithmetic number, because the mean of its divisors is an integer number (5184775887991).

Almost surely, 2^{10369551775981} is an apocalyptic number.

It is an amenable number.

10369551775981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10369551775981 is an equidigital number, since it uses as much as digits as its factorization.

10369551775981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442000, while the sum is 67.

The spelling of 10369551775981 in words is "ten trillion, three hundred sixty-nine billion, five hundred fifty-one million, seven hundred seventy-five thousand, nine hundred eighty-one".