11012309980 has 192 divisors, whose sum is σ = 28903392000. Its totient is φ = 3510312960.

The previous prime is 11012309977. The next prime is 11012309981. The reversal of 11012309980 is 8990321011.

It is a super-3 number, since 3×11012309980³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012309981) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10378650 + ... + 10379710.

It is an arithmetic number, because the mean of its divisors is an integer number (150538500).

Almost surely, 2^11012309980 is an apocalyptic number.

11012309980 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 11012309980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14451696000).

11012309980 is an abundant number, since it is smaller than the sum of its proper divisors (17891082020).

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

11012309980 is a wasteful number, since it uses less digits than its factorization.

11012309980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 11012309980 in words is "eleven billion, twelve million, three hundred nine thousand, nine hundred eighty".