11015744678381 has 2 divisors, whose sum is σ = 11015744678382. Its totient is φ = 11015744678380.

The previous prime is 11015744678371. The next prime is 11015744678447. The reversal of 11015744678381 is 18387644751011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8641048268356 + 2374696410025 = 2939566^2 + 1541005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11015744678381 is a prime.

It is a super-2 number, since 2×11015744678381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11015744678371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5507872339190 + 5507872339191.

It is an arithmetic number, because the mean of its divisors is an integer number (5507872339191).

Almost surely, 2^{11015744678381} is an apocalyptic number.

It is an amenable number.

11015744678381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11015744678381 is an equidigital number, since it uses as much as digits as its factorization.

11015744678381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4515840, while the sum is 56.

The spelling of 11015744678381 in words is "eleven trillion, fifteen billion, seven hundred forty-four million, six hundred seventy-eight thousand, three hundred eighty-one".