10781038987739 has 2 divisors, whose sum is σ = 10781038987740. Its totient is φ = 10781038987738.

The previous prime is 10781038987717. The next prime is 10781038987777. The reversal of 10781038987739 is 93778983018701.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10781038987739 - 2²⁰ = 10781037939163 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (10781038989739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5390519493869 + 5390519493870.

It is an arithmetic number, because the mean of its divisors is an integer number (5390519493870).

Almost surely, 2^{10781038987739} is an apocalyptic number.

10781038987739 is a deficient number, since it is larger than the sum of its proper divisors (1).

10781038987739 is an equidigital number, since it uses as much as digits as its factorization.

10781038987739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128024064, while the sum is 71.

The spelling of 10781038987739 in words is "ten trillion, seven hundred eighty-one billion, thirty-eight million, nine hundred eighty-seven thousand, seven hundred thirty-nine".