11355568890 has 64 divisors (see below), whose sum is σ = 27665141760. Its totient is φ = 2982486080.

The previous prime is 11355568853. The next prime is 11355568891. The reversal of 11355568890 is 9886555311.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11355568891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2781871 + ... + 2785949.

It is an arithmetic number, because the mean of its divisors is an integer number (432267840).

Almost surely, 2^11355568890 is an apocalyptic number.

11355568890 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 11355568890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13832570880).

11355568890 is an abundant number, since it is smaller than the sum of its proper divisors (16309572870).

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

11355568890 is a wasteful number, since it uses less digits than its factorization.

11355568890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5467.

The product of its (nonzero) digits is 1296000, while the sum is 51.

The spelling of 11355568890 in words is "eleven billion, three hundred fifty-five million, five hundred sixty-eight thousand, eight hundred ninety".