11421330765488 has 80 divisors (see below), whose sum is σ = 25771385882880. Its totient is φ = 4801731487488.

The previous prime is 11421330765443. The next prime is 11421330765491. The reversal of 11421330765488 is 88456703312411.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37714931 + ... + 38016557.

It is an arithmetic number, because the mean of its divisors is an integer number (322142323536).

Almost surely, 2^{11421330765488} 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 11421330765488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12885692941440).

11421330765488 is an abundant number, since it is smaller than the sum of its proper divisors (14350055117392).

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

11421330765488 is a wasteful number, since it uses less digits than its factorization.

11421330765488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308074 (or 308068 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 11421330765488 in words is "eleven trillion, four hundred twenty-one billion, three hundred thirty million, seven hundred sixty-five thousand, four hundred eighty-eight".