10661603025331 has 2 divisors, whose sum is σ = 10661603025332. Its totient is φ = 10661603025330.

The previous prime is 10661603025277. The next prime is 10661603025343. The reversal of 10661603025331 is 13352030616601.

It is a happy number.

10661603025331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10661603025331 - 2³⁹ = 10111847211443 is a prime.

It is a super-2 number, since 2×10661603025331² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10661603055331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330801512665 + 5330801512666.

It is an arithmetic number, because the mean of its divisors is an integer number (5330801512666).

Almost surely, 2^{10661603025331} is an apocalyptic number.

10661603025331 is a deficient number, since it is larger than the sum of its proper divisors (1).

10661603025331 is an equidigital number, since it uses as much as digits as its factorization.

10661603025331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 10661603025331 in words is "ten trillion, six hundred sixty-one billion, six hundred three million, twenty-five thousand, three hundred thirty-one".