11611827390 has 128 divisors (see below), whose sum is σ = 31121418240. Its totient is φ = 2755565568.

The previous prime is 11611827329. The next prime is 11611827391. The reversal of 11611827390 is 9372811611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11611827391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7334539 + ... + 7336121.

It is an arithmetic number, because the mean of its divisors is an integer number (243136080).

Almost surely, 2^11611827390 is an apocalyptic number.

11611827390 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 11611827390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15560709120).

11611827390 is an abundant number, since it is smaller than the sum of its proper divisors (19509590850).

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

11611827390 is a wasteful number, since it uses less digits than its factorization.

11611827390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386.

The product of its (nonzero) digits is 18144, while the sum is 39.

The spelling of 11611827390 in words is "eleven billion, six hundred eleven million, eight hundred twenty-seven thousand, three hundred ninety".