1166146025431 has 2 divisors, whose sum is σ = 1166146025432. Its totient is φ = 1166146025430.

The previous prime is 1166146025417. The next prime is 1166146025479. The reversal of 1166146025431 is 1345206416611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1166146025431 - 2²³ = 1166137636823 is a prime.

It is a super-2 number, since 2×1166146025431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166146085431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583073012715 + 583073012716.

It is an arithmetic number, because the mean of its divisors is an integer number (583073012716).

Almost surely, 2^{1166146025431} is an apocalyptic number.

1166146025431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166146025431 is an equidigital number, since it uses as much as digits as its factorization.

1166146025431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 1166146025431 in words is "one trillion, one hundred sixty-six billion, one hundred forty-six million, twenty-five thousand, four hundred thirty-one".