11655256020 has 96 divisors (see below), whose sum is σ = 34018427520. Its totient is φ = 2977927680.

The previous prime is 11655255979. The next prime is 11655256021. The reversal of 11655256020 is 2065255611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11655256021) 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 31 ways as a sum of consecutive naturals, for example, 202374 + ... + 253506.

It is an arithmetic number, because the mean of its divisors is an integer number (354358620).

Almost surely, 2^11655256020 is an apocalyptic number.

11655256020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11655256020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17009213760).

11655256020 is an abundant number, since it is smaller than the sum of its proper divisors (22363171500).

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

11655256020 is a wasteful number, since it uses less digits than its factorization.

11655256020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51305 (or 51303 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 11655256020 in words is "eleven billion, six hundred fifty-five million, two hundred fifty-six thousand, twenty".