11838774510 has 80 divisors (see below), whose sum is σ = 31925124000. Its totient is φ = 3147885504.

The previous prime is 11838774473. The next prime is 11838774511. The reversal of 11838774510 is 1547783811.

11838774510 is a `hidden beast` number, since 118 + 3 + 87 + 7 + 451 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11838774511) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 261751 + ... + 303629.

It is an arithmetic number, because the mean of its divisors is an integer number (399064050).

Almost surely, 2^11838774510 is an apocalyptic number.

11838774510 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 11838774510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15962562000).

11838774510 is an abundant number, since it is smaller than the sum of its proper divisors (20086349490).

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

11838774510 is a wasteful number, since it uses less digits than its factorization.

11838774510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42247 (or 42238 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The spelling of 11838774510 in words is "eleven billion, eight hundred thirty-eight million, seven hundred seventy-four thousand, five hundred ten".