11605421464 has 128 divisors (see below), whose sum is σ = 28768320000. Its totient is φ = 4349261952.

The previous prime is 11605421461. The next prime is 11605421473. The reversal of 11605421464 is 46412450611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11605421461) by changing a digit.

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, 669207 + ... + 686329.

It is an arithmetic number, because the mean of its divisors is an integer number (224752500).

Almost surely, 2^11605421464 is an apocalyptic number.

11605421464 is a gapful number since it is divisible by the number (14) 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 11605421464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14384160000).

11605421464 is an abundant number, since it is smaller than the sum of its proper divisors (17162898536).

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

11605421464 is a wasteful number, since it uses less digits than its factorization.

11605421464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17182 (or 17164 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 11605421464 in words is "eleven billion, six hundred five million, four hundred twenty-one thousand, four hundred sixty-four".