40040413212 has 12 divisors (see below), whose sum is σ = 93427630856. Its totient is φ = 13346804400.

The previous prime is 40040413207. The next prime is 40040413229. The reversal of 40040413212 is 21231404004.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1668350539 + ... + 1668350562.

Almost surely, 2^40040413212 is an apocalyptic number.

It is an amenable number.

40040413212 is an abundant number, since it is smaller than the sum of its proper divisors (53387217644).

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

40040413212 is a wasteful number, since it uses less digits than its factorization.

40040413212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336701108 (or 3336701106 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 40040413212 its reverse (21231404004), we get a palindrome (61271817216).

The spelling of 40040413212 in words is "forty billion, forty million, four hundred thirteen thousand, two hundred twelve".