11878363864237 has 4 divisors (see below), whose sum is σ = 12792084161500. Its totient is φ = 10964643566976.

The previous prime is 11878363864201. The next prime is 11878363864267. The reversal of 11878363864237 is 73246836387811.

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 5081805369796 + 6796558494441 = 2254286^2 + 2607021^2 .

It is a cyclic number.

It is not a de Polignac number, because 11878363864237 - 2³⁵ = 11844004125869 is a prime.

It is a super-2 number, since 2×11878363864237² (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 (11878363864267) 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 in 3 ways as a sum of consecutive naturals, for example, 456860148612 + ... + 456860148637.

It is an arithmetic number, because the mean of its divisors is an integer number (3198021040375).

Almost surely, 2^{11878363864237} is an apocalyptic number.

It is an amenable number.

11878363864237 is a deficient number, since it is larger than the sum of its proper divisors (913720297263).

11878363864237 is an equidigital number, since it uses as much as digits as its factorization.

11878363864237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913720297262.

The product of its digits is 195084288, while the sum is 67.

The spelling of 11878363864237 in words is "eleven trillion, eight hundred seventy-eight billion, three hundred sixty-three million, eight hundred sixty-four thousand, two hundred thirty-seven".