11878469354869 has 4 divisors (see below), whose sum is σ = 12792197766796. Its totient is φ = 10964740942944.

The previous prime is 11878469354861. The next prime is 11878469354881. The reversal of 11878469354869 is 96845396487811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 492481132900 + 11385988221969 = 701770^2 + 3374313^2 .

It is a cyclic number.

It is not a de Polignac number, because 11878469354869 - 2³ = 11878469354861 is a prime.

It is a super-2 number, since 2×11878469354869² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11878469354861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456864205944 + ... + 456864205969.

It is an arithmetic number, because the mean of its divisors is an integer number (3198049441699).

Almost surely, 2^{11878469354869} is an apocalyptic number.

It is an amenable number.

11878469354869 is a deficient number, since it is larger than the sum of its proper divisors (913728411927).

11878469354869 is an equidigital number, since it uses as much as digits as its factorization.

11878469354869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913728411926.

The product of its digits is 2508226560, while the sum is 79.

The spelling of 11878469354869 in words is "eleven trillion, eight hundred seventy-eight billion, four hundred sixty-nine million, three hundred fifty-four thousand, eight hundred sixty-nine".