11427939969 has 4 divisors (see below), whose sum is σ = 15237253296. Its totient is φ = 7618626644.

The previous prime is 11427939961. The next prime is 11427940001. The reversal of 11427939969 is 96993972411.

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 11427939969 - 2³ = 11427939961 is a prime.

It is a super-2 number, since 2×11427939969² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11427939961) 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, 1904656659 + ... + 1904656664.

It is an arithmetic number, because the mean of its divisors is an integer number (3809313324).

Almost surely, 2^11427939969 is an apocalyptic number.

It is an amenable number.

11427939969 is a deficient number, since it is larger than the sum of its proper divisors (3809313327).

11427939969 is an equidigital number, since it uses as much as digits as its factorization.

11427939969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809313326.

The product of its digits is 6613488, while the sum is 60.

The spelling of 11427939969 in words is "eleven billion, four hundred twenty-seven million, nine hundred thirty-nine thousand, nine hundred sixty-nine".