40204664352 has 72 divisors (see below), whose sum is σ = 121057441596. Its totient is φ = 12613226496.

The previous prime is 40204664333. The next prime is 40204664359. The reversal of 40204664352 is 25346640204.

40204664352 is a `hidden beast` number, since 4 + 0 + 2 + 0 + 4 + 6 + 643 + 5 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 40174590096 + 30074256 = 200436^2 + 5484^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40204664359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4100973 + ... + 4110764.

Almost surely, 2^40204664352 is an apocalyptic number.

It is an amenable number.

40204664352 is an abundant number, since it is smaller than the sum of its proper divisors (80852777244).

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

40204664352 is a wasteful number, since it uses less digits than its factorization.

40204664352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8211770 (or 8211759 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The spelling of 40204664352 in words is "forty billion, two hundred four million, six hundred sixty-four thousand, three hundred fifty-two".