11378774550 has 192 divisors, whose sum is σ = 33421860864. Its totient is φ = 2525644800.

The previous prime is 11378774531. The next prime is 11378774599. The reversal of 11378774550 is 5547787311.

It is a self number, because there is not a number n which added to its sum of digits gives 11378774550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2722062 + ... + 2726238.

It is an arithmetic number, because the mean of its divisors is an integer number (174072192).

Almost surely, 2^11378774550 is an apocalyptic number.

11378774550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11378774550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16710930432).

11378774550 is an abundant number, since it is smaller than the sum of its proper divisors (22043086314).

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

11378774550 is a wasteful number, since it uses less digits than its factorization.

11378774550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343 (or 4338 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 48.

The spelling of 11378774550 in words is "eleven billion, three hundred seventy-eight million, seven hundred seventy-four thousand, five hundred fifty".