10138966987 has 2 divisors, whose sum is σ = 10138966988. Its totient is φ = 10138966986.

The previous prime is 10138966967. The next prime is 10138966993. The reversal of 10138966987 is 78966983101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10138966987 - 2¹¹ = 10138964939 is a prime.

It is not a weakly prime, because it can be changed into another prime (10138966967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5069483493 + 5069483494.

It is an arithmetic number, because the mean of its divisors is an integer number (5069483494).

Almost surely, 2^10138966987 is an apocalyptic number.

10138966987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10138966987 is an equidigital number, since it uses as much as digits as its factorization.

10138966987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 58.

The spelling of 10138966987 in words is "ten billion, one hundred thirty-eight million, nine hundred sixty-six thousand, nine hundred eighty-seven".