11216521054640 has 80 divisors (see below), whose sum is σ = 28463498219520. Its totient is φ = 4076681583360.

The previous prime is 11216521054633. The next prime is 11216521054729. The reversal of 11216521054640 is 4645012561211.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 11216521054594 and 11216521054603.

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, 1458800 + ... + 4955919.

It is an arithmetic number, because the mean of its divisors is an integer number (355793727744).

Almost surely, 2^{11216521054640} is an apocalyptic number.

11216521054640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11216521054640 is an abundant number, since it is smaller than the sum of its proper divisors (17246977164880).

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

11216521054640 is a wasteful number, since it uses less digits than its factorization.

11216521054640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6416730 (or 6416724 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 11216521054640 in words is "eleven trillion, two hundred sixteen billion, five hundred twenty-one million, fifty-four thousand, six hundred forty".