40204020004000 has 96 divisors (see below), whose sum is σ = 99759310599312. Its totient is φ = 15922384000000.

The previous prime is 40204020003989. The next prime is 40204020004121. The reversal of 40204020004000 is 40002040204.

It can be written as a sum of positive squares in 8 ways, for example, as 22573863430416 + 17630156573584 = 4751196^2 + 4198828^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49353451 + ... + 50161450.

Almost surely, 2^{40204020004000} is an apocalyptic number.

40204020004000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40204020004000 is an abundant number, since it is smaller than the sum of its proper divisors (59555290595312).

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

40204020004000 is a wasteful number, since it uses less digits than its factorization.

40204020004000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99515027 (or 99515009 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 40204020004000 its reverse (40002040204), we get a palindrome (40244022044204).

The spelling of 40204020004000 in words is "forty trillion, two hundred four billion, twenty million, four thousand".