40242609888 has 144 divisors (see below), whose sum is σ = 115294427136. Its totient is φ = 12284213760.

The previous prime is 40242609871. The next prime is 40242609889. The reversal of 40242609888 is 88890624204.

It is a self number, because there is not a number n which added to its sum of digits gives 40242609888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40242609889) 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, 2050683 + ... + 2070213.

It is an arithmetic number, because the mean of its divisors is an integer number (800655744).

Almost surely, 2^40242609888 is an apocalyptic number.

40242609888 is a gapful number since it is divisible by the number (48) 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 40242609888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57647213568).

40242609888 is an abundant number, since it is smaller than the sum of its proper divisors (75051817248).

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

40242609888 is a wasteful number, since it uses less digits than its factorization.

40242609888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19697 (or 19676 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 51.

The spelling of 40242609888 in words is "forty billion, two hundred forty-two million, six hundred nine thousand, eight hundred eighty-eight".