10638190081 has 2 divisors, whose sum is σ = 10638190082. Its totient is φ = 10638190080.

The previous prime is 10638190061. The next prime is 10638190109. The reversal of 10638190081 is 18009183601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6655949056 + 3982241025 = 81584^2 + 63105^2 .

It is a cyclic number.

It is not a de Polignac number, because 10638190081 - 2⁵ = 10638190049 is a prime.

It is a super-2 number, since 2×10638190081² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10638190081.

It is not a weakly prime, because it can be changed into another prime (10638190001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5319095040 + 5319095041.

It is an arithmetic number, because the mean of its divisors is an integer number (5319095041).

Almost surely, 2^10638190081 is an apocalyptic number.

It is an amenable number.

10638190081 is a deficient number, since it is larger than the sum of its proper divisors (1).

10638190081 is an equidigital number, since it uses as much as digits as its factorization.

10638190081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 10638190081 in words is "ten billion, six hundred thirty-eight million, one hundred ninety thousand, eighty-one".