10010561081 has 2 divisors, whose sum is σ = 10010561082. Its totient is φ = 10010561080.

The previous prime is 10010561059. The next prime is 10010561087. The reversal of 10010561081 is 18016501001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9200646400 + 809914681 = 95920^2 + 28459^2 .

It is a cyclic number.

It is not a de Polignac number, because 10010561081 - 2¹⁸ = 10010298937 is a prime.

It is a super-2 number, since 2×10010561081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10010561087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005280540 + 5005280541.

It is an arithmetic number, because the mean of its divisors is an integer number (5005280541).

Almost surely, 2^10010561081 is an apocalyptic number.

It is an amenable number.

10010561081 is a deficient number, since it is larger than the sum of its proper divisors (1).

10010561081 is an equidigital number, since it uses as much as digits as its factorization.

10010561081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 23.

The spelling of 10010561081 in words is "ten billion, ten million, five hundred sixty-one thousand, eighty-one".