10938136691 has 2 divisors, whose sum is σ = 10938136692. Its totient is φ = 10938136690.

The previous prime is 10938136663. The next prime is 10938136721. The reversal of 10938136691 is 19663183901.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10938136691 - 2¹⁰ = 10938135667 is a prime.

It is not a weakly prime, because it can be changed into another prime (10938136091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5469068345 + 5469068346.

It is an arithmetic number, because the mean of its divisors is an integer number (5469068346).

Almost surely, 2^10938136691 is an apocalyptic number.

10938136691 is a deficient number, since it is larger than the sum of its proper divisors (1).

10938136691 is an equidigital number, since it uses as much as digits as its factorization.

10938136691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 10938136691 in words is "ten billion, nine hundred thirty-eight million, one hundred thirty-six thousand, six hundred ninety-one".