10010113781 has 2 divisors, whose sum is σ = 10010113782. Its totient is φ = 10010113780.

The previous prime is 10010113733. The next prime is 10010113871. The reversal of 10010113781 is 18731101001.

Together with next prime (10010113871) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9853738756 + 156375025 = 99266^2 + 12505^2 .

It is a cyclic number.

It is not a de Polignac number, because 10010113781 - 2¹⁰ = 10010112757 is a prime.

It is a super-2 number, since 2×10010113781² (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 (10010113081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005056890 + 5005056891.

It is an arithmetic number, because the mean of its divisors is an integer number (5005056891).

Almost surely, 2^10010113781 is an apocalyptic number.

It is an amenable number.

10010113781 is a deficient number, since it is larger than the sum of its proper divisors (1).

10010113781 is an equidigital number, since it uses as much as digits as its factorization.

10010113781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 23.

Adding to 10010113781 its reverse (18731101001), we get a palindrome (28741214782).

The spelling of 10010113781 in words is "ten billion, ten million, one hundred thirteen thousand, seven hundred eighty-one".