40323666253640 has 192 divisors, whose sum is σ = 115173126028800. Its totient is φ = 12564325939200.

The previous prime is 40323666253609. The next prime is 40323666253699. The reversal of 40323666253640 is 4635266632304.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66296105 + ... + 66901575.

It is an arithmetic number, because the mean of its divisors is an integer number (599860031400).

Almost surely, 2^{40323666253640} is an apocalyptic number.

40323666253640 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 40323666253640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57586563014400).

40323666253640 is an abundant number, since it is smaller than the sum of its proper divisors (74849459775160).

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

40323666253640 is a wasteful number, since it uses less digits than its factorization.

40323666253640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608596 (or 608585 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 50.

The spelling of 40323666253640 in words is "forty trillion, three hundred twenty-three billion, six hundred sixty-six million, two hundred fifty-three thousand, six hundred forty".