10123485781 has 2 divisors, whose sum is σ = 10123485782. Its totient is φ = 10123485780.

The previous prime is 10123485769. The next prime is 10123485887. The reversal of 10123485781 is 18758432101.

10123485781 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7488306225 + 2635179556 = 86535^2 + 51334^2 .

It is a cyclic number.

It is not a de Polignac number, because 10123485781 - 2²³ = 10115097173 is a prime.

It is a super-2 number, since 2×10123485781² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10123485721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5061742890 + 5061742891.

It is an arithmetic number, because the mean of its divisors is an integer number (5061742891).

Almost surely, 2^10123485781 is an apocalyptic number.

It is an amenable number.

10123485781 is a deficient number, since it is larger than the sum of its proper divisors (1).

10123485781 is an equidigital number, since it uses as much as digits as its factorization.

10123485781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 10123485781 in words is "ten billion, one hundred twenty-three million, four hundred eighty-five thousand, seven hundred eighty-one".