11049956820 has 720 divisors, whose sum is σ = 44330001408. Its totient is φ = 2246952960.

The previous prime is 11049956791. The next prime is 11049956873. The reversal of 11049956820 is 2865994011.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 256975719 + ... + 256975761.

Almost surely, 2^11049956820 is an apocalyptic number.

11049956820 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 11049956820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22165000704).

11049956820 is an abundant number, since it is smaller than the sum of its proper divisors (33280044588).

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

11049956820 is a wasteful number, since it uses less digits than its factorization.

11049956820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 11049956820 in words is "eleven billion, forty-nine million, nine hundred fifty-six thousand, eight hundred twenty".