40382399988 has 108 divisors (see below), whose sum is σ = 123141537792. Its totient is φ = 11537814960.

The previous prime is 40382399933. The next prime is 40382399989. The reversal of 40382399988 is 88999328304.

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40382399989) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 376308 + ... + 471563.

It is an arithmetic number, because the mean of its divisors is an integer number (1140199424).

Almost surely, 2^40382399988 is an apocalyptic number.

It is an amenable number.

40382399988 is an abundant number, since it is smaller than the sum of its proper divisors (82759137804).

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

40382399988 is a wasteful number, since it uses less digits than its factorization.

40382399988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847904 (or 847883 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 63.

The spelling of 40382399988 in words is "forty billion, three hundred eighty-two million, three hundred ninety-nine thousand, nine hundred eighty-eight".