10666051657 has 2 divisors, whose sum is σ = 10666051658. Its totient is φ = 10666051656.

The previous prime is 10666051633. The next prime is 10666051661. The reversal of 10666051657 is 75615066601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9513856521 + 1152195136 = 97539^2 + 33944^2 .

It is an emirp because it is prime and its reverse (75615066601) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10666051657 is a prime.

It is a super-2 number, since 2×10666051657² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10666054657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333025828 + 5333025829.

It is an arithmetic number, because the mean of its divisors is an integer number (5333025829).

Almost surely, 2^10666051657 is an apocalyptic number.

It is an amenable number.

10666051657 is a deficient number, since it is larger than the sum of its proper divisors (1).

10666051657 is an equidigital number, since it uses as much as digits as its factorization.

10666051657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 10666051657 in words is "ten billion, six hundred sixty-six million, fifty-one thousand, six hundred fifty-seven".