11168642519 has 32 divisors (see below), whose sum is σ = 12121242624. Its totient is φ = 10266220800.

The previous prime is 11168642489. The next prime is 11168642621. The reversal of 11168642519 is 91524686111.

It is a cyclic number.

It is not a de Polignac number, because 11168642519 - 2¹² = 11168638423 is a prime.

It is a super-2 number, since 2×11168642519² (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 11168642519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11168642819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11361302 + ... + 11362284.

It is an arithmetic number, because the mean of its divisors is an integer number (378788832).

Almost surely, 2^11168642519 is an apocalyptic number.

11168642519 is a deficient number, since it is larger than the sum of its proper divisors (952600105).

11168642519 is a wasteful number, since it uses less digits than its factorization.

11168642519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247.

The product of its digits is 103680, while the sum is 44.

The spelling of 11168642519 in words is "eleven billion, one hundred sixty-eight million, six hundred forty-two thousand, five hundred nineteen".