11878876608457 has 2 divisors, whose sum is σ = 11878876608458. Its totient is φ = 11878876608456.

The previous prime is 11878876608451. The next prime is 11878876608497. The reversal of 11878876608457 is 75480667887811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11280858972601 + 598017635856 = 3358699^2 + 773316^2 .

It is a cyclic number.

It is not a de Polignac number, because 11878876608457 - 2³ = 11878876608449 is a prime.

It is a super-2 number, since 2×11878876608457² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11878876608451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5939438304228 + 5939438304229.

It is an arithmetic number, because the mean of its divisors is an integer number (5939438304229).

Almost surely, 2^{11878876608457} is an apocalyptic number.

It is an amenable number.

11878876608457 is a deficient number, since it is larger than the sum of its proper divisors (1).

11878876608457 is an equidigital number, since it uses as much as digits as its factorization.

11878876608457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1011548160, while the sum is 76.

The spelling of 11878876608457 in words is "eleven trillion, eight hundred seventy-eight billion, eight hundred seventy-six million, six hundred eight thousand, four hundred fifty-seven".