11054821720 has 64 divisors (see below), whose sum is σ = 25273749600. Its totient is φ = 4351226880.

The previous prime is 11054821697. The next prime is 11054821733. The reversal of 11054821720 is 2712845011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 743802 + ... + 758518.

Almost surely, 2^11054821720 is an apocalyptic number.

11054821720 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 11054821720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12636874800).

11054821720 is an abundant number, since it is smaller than the sum of its proper divisors (14218927880).

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

11054821720 is a wasteful number, since it uses less digits than its factorization.

11054821720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15028 (or 15024 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The spelling of 11054821720 in words is "eleven billion, fifty-four million, eight hundred twenty-one thousand, seven hundred twenty".