40012002040 has 32 divisors (see below), whose sum is σ = 90050168880. Its totient is φ = 16000682752.

The previous prime is 40012002029. The next prime is 40012002053. The reversal of 40012002040 is 4020021004.

40012002040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40012002040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31164 + ... + 284596.

Almost surely, 2^40012002040 is an apocalyptic number.

40012002040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40012002040 is an abundant number, since it is smaller than the sum of its proper divisors (50038166840).

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

40012002040 is a wasteful number, since it uses less digits than its factorization.

40012002040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257391 (or 257387 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 40012002040 its reverse (4020021004), we get a palindrome (44032023044).

The spelling of 40012002040 in words is "forty billion, twelve million, two thousand, forty".