11111319999 has 48 divisors (see below), whose sum is σ = 17783470432. Its totient is φ = 6643067904.

The previous prime is 11111319997. The next prime is 11111320009. The reversal of 11111319999 is 99991311111.

It is not a de Polignac number, because 11111319999 - 2¹ = 11111319997 is a prime.

It is a super-2 number, since 2×11111319999² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111319997) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 562539 + ... + 581955.

Almost surely, 2^11111319999 is an apocalyptic number.

11111319999 is a deficient number, since it is larger than the sum of its proper divisors (6672150433).

11111319999 is a wasteful number, since it uses less digits than its factorization.

11111319999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19576 (or 19573 counting only the distinct ones).

The product of its digits is 19683, while the sum is 45.

The spelling of 11111319999 in words is "eleven billion, one hundred eleven million, three hundred nineteen thousand, nine hundred ninety-nine".