11377981821719 has 2 divisors, whose sum is σ = 11377981821720. Its totient is φ = 11377981821718.

The previous prime is 11377981821707. The next prime is 11377981821757. The reversal of 11377981821719 is 91712818977311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11377981821719 - 2²⁰ = 11377980773143 is a prime.

It is a super-2 number, since 2×11377981821719² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11377981821919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5688990910859 + 5688990910860.

It is an arithmetic number, because the mean of its divisors is an integer number (5688990910860).

Almost surely, 2^{11377981821719} is an apocalyptic number.

11377981821719 is a deficient number, since it is larger than the sum of its proper divisors (1).

11377981821719 is an equidigital number, since it uses as much as digits as its factorization.

11377981821719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10668672, while the sum is 65.

The spelling of 11377981821719 in words is "eleven trillion, three hundred seventy-seven billion, nine hundred eighty-one million, eight hundred twenty-one thousand, seven hundred nineteen".