11266478816 has 48 divisors (see below), whose sum is σ = 23928824304. Its totient is φ = 5201823744.

The previous prime is 11266478813. The next prime is 11266478863. The reversal of 11266478816 is 61887466211.

It is a super-2 number, since 2×11266478816² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11266478813) 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, 166550 + ... + 224213.

It is an arithmetic number, because the mean of its divisors is an integer number (498517173).

Almost surely, 2^11266478816 is an apocalyptic number.

11266478816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11266478816 is an abundant number, since it is smaller than the sum of its proper divisors (12662345488).

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

11266478816 is a wasteful number, since it uses less digits than its factorization.

11266478816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390843 (or 390835 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The spelling of 11266478816 in words is "eleven billion, two hundred sixty-six million, four hundred seventy-eight thousand, eight hundred sixteen".