11219533640 has 128 divisors (see below), whose sum is σ = 29833297920. Its totient is φ = 3716064000.

The previous prime is 11219533631. The next prime is 11219533669. The reversal of 11219533640 is 4633591211.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 11219533640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9747065 + ... + 9748215.

It is an arithmetic number, because the mean of its divisors is an integer number (233072640).

Almost surely, 2^11219533640 is an apocalyptic number.

11219533640 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 11219533640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14916648960).

11219533640 is an abundant number, since it is smaller than the sum of its proper divisors (18613764280).

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

11219533640 is a wasteful number, since it uses less digits than its factorization.

11219533640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323 (or 2319 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 11219533640 in words is "eleven billion, two hundred nineteen million, five hundred thirty-three thousand, six hundred forty".