11266814778 has 16 divisors (see below), whose sum is σ = 23260521216. Its totient is φ = 3634456320.

The previous prime is 11266814773. The next prime is 11266814791. The reversal of 11266814778 is 87741866211.

It is a super-2 number, since 2×11266814778² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11266814778.

It is not an unprimeable number, because it can be changed into a prime (11266814771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30286951 + ... + 30287322.

It is an arithmetic number, because the mean of its divisors is an integer number (1453782576).

Almost surely, 2^11266814778 is an apocalyptic number.

11266814778 is an abundant number, since it is smaller than the sum of its proper divisors (11993706438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11266814778 is a wasteful number, since it uses less digits than its factorization.

11266814778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60574309.

The product of its digits is 903168, while the sum is 51.

The spelling of 11266814778 in words is "eleven billion, two hundred sixty-six million, eight hundred fourteen thousand, seven hundred seventy-eight".