11281291000 has 64 divisors (see below), whose sum is σ = 30169414080. Its totient is φ = 3867868800.

The previous prime is 11281290931. The next prime is 11281291019. The reversal of 11281291000 is 19218211.

11281291000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 798807 + ... + 812806.

It is an arithmetic number, because the mean of its divisors is an integer number (471397095).

Almost surely, 2^11281291000 is an apocalyptic number.

11281291000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11281291000 is an abundant number, since it is smaller than the sum of its proper divisors (18888123080).

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

11281291000 is a wasteful number, since it uses less digits than its factorization.

11281291000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611641 (or 1611627 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 11281291000 in words is "eleven billion, two hundred eighty-one million, two hundred ninety-one thousand".