11521125434020 has 48 divisors (see below), whose sum is σ = 25121695460400. Its totient is φ = 4432997004800.

The previous prime is 11521125434009. The next prime is 11521125434029. The reversal of 11521125434020 is 2043452112511.

It can be written as a sum of positive squares in 8 ways, for example, as 763355184804 + 10757770249216 = 873702^2 + 3279904^2 .

It is not an unprimeable number, because it can be changed into a prime (11521125434029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36765931 + ... + 37077970.

It is an arithmetic number, because the mean of its divisors is an integer number (523368655425).

Almost surely, 2^{11521125434020} is an apocalyptic number.

11521125434020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11521125434020 is an abundant number, since it is smaller than the sum of its proper divisors (13600570026380).

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

11521125434020 is a wasteful number, since it uses less digits than its factorization.

11521125434020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73844208 (or 73844206 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 11521125434020 its reverse (2043452112511), we get a palindrome (13564577546531).

The spelling of 11521125434020 in words is "eleven trillion, five hundred twenty-one billion, one hundred twenty-five million, four hundred thirty-four thousand, twenty".