40385238372 has 72 divisors (see below), whose sum is σ = 102511681272. Its totient is φ = 13405593600.

The previous prime is 40385238349. The next prime is 40385238401. The reversal of 40385238372 is 27383258304.

40385238372 is a `hidden beast` number, since 4 + 0 + 385 + 238 + 37 + 2 = 666.

40385238372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2397669156 + 37987569216 = 48966^2 + 194904^2 .

It is a super-2 number, since 2×40385238372² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9712918 + ... + 9717074.

It is an arithmetic number, because the mean of its divisors is an integer number (1423773351).

Almost surely, 2^40385238372 is an apocalyptic number.

It is an amenable number.

40385238372 is an abundant number, since it is smaller than the sum of its proper divisors (62126442900).

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

40385238372 is a wasteful number, since it uses less digits than its factorization.

40385238372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5229 (or 5224 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 40385238372 in words is "forty billion, three hundred eighty-five million, two hundred thirty-eight thousand, three hundred seventy-two".