40530245040 has 120 divisors (see below), whose sum is σ = 136176827280. Its totient is φ = 10803082752.

The previous prime is 40530245023. The next prime is 40530245047. The reversal of 40530245040 is 4054203504.

40530245040 is a `hidden beast` number, since 40 + 530 + 2 + 4 + 50 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a junction number, because it is equal to n+sod(n) for n = 40530244995 and 40530245013.

It is not an unprimeable number, because it can be changed into a prime (40530245047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1708299 + ... + 1731861.

It is an arithmetic number, because the mean of its divisors is an integer number (1134806894).

Almost surely, 2^40530245040 is an apocalyptic number.

40530245040 is a gapful number since it is divisible by the number (40) 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 40530245040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68088413640).

40530245040 is an abundant number, since it is smaller than the sum of its proper divisors (95646582240).

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

40530245040 is a wasteful number, since it uses less digits than its factorization.

40530245040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25971 (or 25962 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 40530245040 its reverse (4054203504), we get a palindrome (44584448544).

The spelling of 40530245040 in words is "forty billion, five hundred thirty million, two hundred forty-five thousand, forty".