11107781019 has 14 divisors (see below), whose sum is σ = 16654054116. Its totient is φ = 7405186860.

The previous prime is 11107780993. The next prime is 11107781033. The reversal of 11107781019 is 91018770111.

It is not a de Polignac number, because 11107781019 - 2⁹ = 11107780507 is a prime.

It is a super-2 number, since 2×11107781019² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11107781039) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7617777 + ... + 7619234.

It is an arithmetic number, because the mean of its divisors is an integer number (1189575294).

Almost surely, 2^11107781019 is an apocalyptic number.

11107781019 is a deficient number, since it is larger than the sum of its proper divisors (5546273097).

11107781019 is an frugal number, since it uses more digits than its factorization.

11107781019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15237029 (or 15237014 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 36.

The spelling of 11107781019 in words is "eleven billion, one hundred seven million, seven hundred eighty-one thousand, nineteen".