11020513104 has 80 divisors (see below), whose sum is σ = 31666544640. Its totient is φ = 3669603840.

The previous prime is 11020513093. The next prime is 11020513111. The reversal of 11020513104 is 40131502011.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 409009 + ... + 435119.

It is an arithmetic number, because the mean of its divisors is an integer number (395831808).

Almost surely, 2^11020513104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11020513104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15833272320).

11020513104 is an abundant number, since it is smaller than the sum of its proper divisors (20646031536).

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

11020513104 is a wasteful number, since it uses less digits than its factorization.

11020513104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27105 (or 27093 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The spelling of 11020513104 in words is "eleven billion, twenty million, five hundred thirteen thousand, one hundred four".