11605293857 has 2 divisors, whose sum is σ = 11605293858. Its totient is φ = 11605293856.

The previous prime is 11605293851. The next prime is 11605293881. The reversal of 11605293857 is 75839250611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6147187216 + 5458106641 = 78404^2 + 73879^2 .

It is an emirp because it is prime and its reverse (75839250611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11605293857 - 2³⁰ = 10531552033 is a prime.

It is not a weakly prime, because it can be changed into another prime (11605293851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5802646928 + 5802646929.

It is an arithmetic number, because the mean of its divisors is an integer number (5802646929).

Almost surely, 2^11605293857 is an apocalyptic number.

It is an amenable number.

11605293857 is a deficient number, since it is larger than the sum of its proper divisors (1).

11605293857 is an equidigital number, since it uses as much as digits as its factorization.

11605293857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 11605293857 in words is "eleven billion, six hundred five million, two hundred ninety-three thousand, eight hundred fifty-seven".