40036238020 has 24 divisors (see below), whose sum is σ = 84892377024. Its totient is φ = 15859013856.

The previous prime is 40036238003. The next prime is 40036238027. The reversal of 40036238020 is 2083263004.

It is a self number, because there is not a number n which added to its sum of digits gives 40036238020.

It is not an unprimeable number, because it can be changed into a prime (40036238027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9715474 + ... + 9719593.

It is an arithmetic number, because the mean of its divisors is an integer number (3537182376).

Almost surely, 2^40036238020 is an apocalyptic number.

It is an amenable number.

40036238020 is an abundant number, since it is smaller than the sum of its proper divisors (44856139004).

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

40036238020 is a wasteful number, since it uses less digits than its factorization.

40036238020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19435179 (or 19435177 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 40036238020 in words is "forty billion, thirty-six million, two hundred thirty-eight thousand, twenty".