40401248052 has 72 divisors (see below), whose sum is σ = 103662574848. Its totient is φ = 12237610880.

The previous prime is 40401248029. The next prime is 40401248059. The reversal of 40401248052 is 25084210404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40401248059) 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, 4724893 + ... + 4733435.

It is an arithmetic number, because the mean of its divisors is an integer number (1439757984).

Almost surely, 2^40401248052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40401248052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51831287424).

40401248052 is an abundant number, since it is smaller than the sum of its proper divisors (63261326796).

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

40401248052 is a wasteful number, since it uses less digits than its factorization.

40401248052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11829 (or 11816 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

Adding to 40401248052 its reverse (25084210404), we get a palindrome (65485458456).

The spelling of 40401248052 in words is "forty billion, four hundred one million, two hundred forty-eight thousand, fifty-two".