11111344465 has 16 divisors (see below), whose sum is σ = 14369294016. Its totient is φ = 8199576000.

The previous prime is 11111344451. The next prime is 11111344537. The reversal of 11111344465 is 56444311111.

It is not a de Polignac number, because 11111344465 - 2¹³ = 11111336273 is a prime.

It is a super-2 number, since 2×11111344465² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35410 + ... + 153220.

It is an arithmetic number, because the mean of its divisors is an integer number (898080876).

Almost surely, 2^11111344465 is an apocalyptic number.

It is an amenable number.

11111344465 is a deficient number, since it is larger than the sum of its proper divisors (3257949551).

11111344465 is a wasteful number, since it uses less digits than its factorization.

11111344465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119280.

The product of its digits is 5760, while the sum is 31.

Adding to 11111344465 its reverse (56444311111), we get a palindrome (67555655576).

The spelling of 11111344465 in words is "eleven billion, one hundred eleven million, three hundred forty-four thousand, four hundred sixty-five".