11665522465020 has 144 divisors (see below), whose sum is σ = 37485057486240. Its totient is φ = 2928308018688.

The previous prime is 11665522464989. The next prime is 11665522465027. The reversal of 11665522465020 is 2056422556611.

11665522465020 is a `hidden beast` number, since 1 + 1 + 6 + 6 + 552 + 2 + 46 + 50 + 2 + 0 = 666.

11665522465020 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 (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11665522465027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10326027 + ... + 11399906.

It is an arithmetic number, because the mean of its divisors is an integer number (260312899210).

Almost surely, 2^{11665522465020} is an apocalyptic number.

11665522465020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11665522465020 is an abundant number, since it is smaller than the sum of its proper divisors (25819535021220).

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

11665522465020 is a wasteful number, since it uses less digits than its factorization.

11665522465020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21726124 (or 21726119 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 11665522465020 in words is "eleven trillion, six hundred sixty-five billion, five hundred twenty-two million, four hundred sixty-five thousand, twenty".