911667138841 has 2 divisors, whose sum is σ = 911667138842. Its totient is φ = 911667138840.

The previous prime is 911667138821. The next prime is 911667138859. The reversal of 911667138841 is 148831766119.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 461699865225 + 449967273616 = 679485^2 + 670796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-911667138841 is a prime.

It is a super-2 number, since 2×911667138841² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (911667138821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455833569420 + 455833569421.

It is an arithmetic number, because the mean of its divisors is an integer number (455833569421).

Almost surely, 2^911667138841 is an apocalyptic number.

It is an amenable number.

911667138841 is a deficient number, since it is larger than the sum of its proper divisors (1).

911667138841 is an equidigital number, since it uses as much as digits as its factorization.

911667138841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 55.

The spelling of 911667138841 in words is "nine hundred eleven billion, six hundred sixty-seven million, one hundred thirty-eight thousand, eight hundred forty-one".