11714142781 has 4 divisors (see below), whose sum is σ = 12779064864. Its totient is φ = 10649220700.

The previous prime is 11714142773. The next prime is 11714142793. The reversal of 11714142781 is 18724141711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11714142781 - 2³ = 11714142773 is a prime.

It is a super-2 number, since 2×11714142781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11714142781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11714142721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532461025 + ... + 532461046.

It is an arithmetic number, because the mean of its divisors is an integer number (3194766216).

Almost surely, 2^11714142781 is an apocalyptic number.

11714142781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11714142781 is a deficient number, since it is larger than the sum of its proper divisors (1064922083).

11714142781 is a wasteful number, since it uses less digits than its factorization.

11714142781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064922082.

The product of its digits is 12544, while the sum is 37.

The spelling of 11714142781 in words is "eleven billion, seven hundred fourteen million, one hundred forty-two thousand, seven hundred eighty-one".