10661870801 has 2 divisors, whose sum is σ = 10661870802. Its totient is φ = 10661870800.

The previous prime is 10661870797. The next prime is 10661870831. The reversal of 10661870801 is 10807816601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10650446401 + 11424400 = 103201^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 10661870801 - 2² = 10661870797 is a prime.

It is a super-2 number, since 2×10661870801² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10661870831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330935400 + 5330935401.

It is an arithmetic number, because the mean of its divisors is an integer number (5330935401).

Almost surely, 2^10661870801 is an apocalyptic number.

It is an amenable number.

10661870801 is a deficient number, since it is larger than the sum of its proper divisors (1).

10661870801 is an equidigital number, since it uses as much as digits as its factorization.

10661870801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 38.

The spelling of 10661870801 in words is "ten billion, six hundred sixty-one million, eight hundred seventy thousand, eight hundred one".