10217476981 has 2 divisors, whose sum is σ = 10217476982. Its totient is φ = 10217476980.

The previous prime is 10217476937. The next prime is 10217476987. The reversal of 10217476981 is 18967471201.

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., 7037532100 + 3179944881 = 83890^2 + 56391^2 .

It is a cyclic number.

It is not a de Polignac number, because 10217476981 - 2⁷ = 10217476853 is a prime.

It is a super-2 number, since 2×10217476981² (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 (10217476987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5108738490 + 5108738491.

It is an arithmetic number, because the mean of its divisors is an integer number (5108738491).

Almost surely, 2^10217476981 is an apocalyptic number.

It is an amenable number.

10217476981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10217476981 is an equidigital number, since it uses as much as digits as its factorization.

10217476981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 46.

The spelling of 10217476981 in words is "ten billion, two hundred seventeen million, four hundred seventy-six thousand, nine hundred eighty-one".