11545342420040 has 128 divisors (see below), whose sum is σ = 30533282035200. Its totient is φ = 3873477227520.

The previous prime is 11545342419997. The next prime is 11545342420109. The reversal of 11545342420040 is 4002424354511.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11311166 + ... + 12289554.

It is an arithmetic number, because the mean of its divisors is an integer number (238541265900).

Almost surely, 2^{11545342420040} is an apocalyptic number.

11545342420040 is a gapful number since it is divisible by the number (10) 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 11545342420040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15266641017600).

11545342420040 is an abundant number, since it is smaller than the sum of its proper divisors (18987939615160).

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

11545342420040 is a wasteful number, since it uses less digits than its factorization.

11545342420040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980487 (or 980483 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 11545342420040 its reverse (4002424354511), we get a palindrome (15547766774551).

The spelling of 11545342420040 in words is "eleven trillion, five hundred forty-five billion, three hundred forty-two million, four hundred twenty thousand, forty".