1166361445631 has 2 divisors, whose sum is σ = 1166361445632. Its totient is φ = 1166361445630.

The previous prime is 1166361445619. The next prime is 1166361445661. The reversal of 1166361445631 is 1365441636611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1166361445631 - 2¹⁸ = 1166361183487 is a prime.

It is a super-2 number, since 2×1166361445631² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166361445661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583180722815 + 583180722816.

It is an arithmetic number, because the mean of its divisors is an integer number (583180722816).

Almost surely, 2^{1166361445631} is an apocalyptic number.

1166361445631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166361445631 is an equidigital number, since it uses as much as digits as its factorization.

1166361445631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 47.

The spelling of 1166361445631 in words is "one trillion, one hundred sixty-six billion, three hundred sixty-one million, four hundred forty-five thousand, six hundred thirty-one".