11278144992 has 48 divisors (see below), whose sum is σ = 29910362832. Its totient is φ = 3720622080.

The previous prime is 11278144939. The next prime is 11278144993. The reversal of 11278144992 is 29944187211.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11278144993) 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, 596259 + ... + 614882.

It is an arithmetic number, because the mean of its divisors is an integer number (623132559).

Almost surely, 2^11278144992 is an apocalyptic number.

11278144992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11278144992 is an abundant number, since it is smaller than the sum of its proper divisors (18632217840).

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

11278144992 is a wasteful number, since it uses less digits than its factorization.

11278144992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211251 (or 1211243 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The spelling of 11278144992 in words is "eleven billion, two hundred seventy-eight million, one hundred forty-four thousand, nine hundred ninety-two".