1156646630869 has 2 divisors, whose sum is σ = 1156646630870. Its totient is φ = 1156646630868.

The previous prime is 1156646630761. The next prime is 1156646630897. The reversal of 1156646630869 is 9680366466511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636716223025 + 519930407844 = 797945^2 + 721062^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156646630869 - 2²¹ = 1156644533717 is a prime.

It is a super-2 number, since 2×1156646630869² (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 (1156646630969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578323315434 + 578323315435.

It is an arithmetic number, because the mean of its divisors is an integer number (578323315435).

Almost surely, 2^{1156646630869} is an apocalyptic number.

It is an amenable number.

1156646630869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156646630869 is an equidigital number, since it uses as much as digits as its factorization.

1156646630869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33592320, while the sum is 61.

The spelling of 1156646630869 in words is "one trillion, one hundred fifty-six billion, six hundred forty-six million, six hundred thirty thousand, eight hundred sixty-nine".