11868508381749 has 16 divisors (see below), whose sum is σ = 16295518116864. Its totient is φ = 7678939558400.

The previous prime is 11868508381699. The next prime is 11868508381771. The reversal of 11868508381749 is 94718380586811.

It is a cyclic number.

It is not a de Polignac number, because 11868508381749 - 2¹⁶ = 11868508316213 is a prime.

It is a super-2 number, since 2×11868508381749² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11868508381789) 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 15 ways as a sum of consecutive naturals, for example, 252573204 + ... + 252620189.

It is an arithmetic number, because the mean of its divisors is an integer number (1018469882304).

Almost surely, 2^{11868508381749} is an apocalyptic number.

It is an amenable number.

11868508381749 is a deficient number, since it is larger than the sum of its proper divisors (4427009735115).

11868508381749 is a wasteful number, since it uses less digits than its factorization.

11868508381749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505193628.

The product of its (nonzero) digits is 92897280, while the sum is 69.

The spelling of 11868508381749 in words is "eleven trillion, eight hundred sixty-eight billion, five hundred eight million, three hundred eighty-one thousand, seven hundred forty-nine".