10636578063781 has 2 divisors, whose sum is σ = 10636578063782. Its totient is φ = 10636578063780.

The previous prime is 10636578063751. The next prime is 10636578063857. The reversal of 10636578063781 is 18736087563601.

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., 10631779730881 + 4798332900 = 3260641^2 + 69270^2 .

It is an emirp because it is prime and its reverse (18736087563601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10636578063781 - 2¹⁷ = 10636577932709 is a prime.

It is a super-2 number, since 2×10636578063781² (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 (10636578063751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5318289031890 + 5318289031891.

It is an arithmetic number, because the mean of its divisors is an integer number (5318289031891).

Almost surely, 2^{10636578063781} is an apocalyptic number.

It is an amenable number.

10636578063781 is a deficient number, since it is larger than the sum of its proper divisors (1).

10636578063781 is an equidigital number, since it uses as much as digits as its factorization.

10636578063781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 10636578063781 in words is "ten trillion, six hundred thirty-six billion, five hundred seventy-eight million, sixty-three thousand, seven hundred eighty-one".