10781038987718 has 4 divisors (see below), whose sum is σ = 16171558481580. Its totient is φ = 5390519493858.

The previous prime is 10781038987717. The next prime is 10781038987739. The reversal of 10781038987718 is 81778983018701.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10781038987717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2695259746928 + ... + 2695259746931.

It is an arithmetic number, because the mean of its divisors is an integer number (4042889620395).

Almost surely, 2^{10781038987718} is an apocalyptic number.

10781038987718 is a deficient number, since it is larger than the sum of its proper divisors (5390519493862).

10781038987718 is an equidigital number, since it uses as much as digits as its factorization.

10781038987718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5390519493861.

The product of its (nonzero) digits is 37933056, while the sum is 68.

The spelling of 10781038987718 in words is "ten trillion, seven hundred eighty-one billion, thirty-eight million, nine hundred eighty-seven thousand, seven hundred eighteen".