40013155212 has 12 divisors (see below), whose sum is σ = 93364028856. Its totient is φ = 13337718400.

The previous prime is 40013155163. The next prime is 40013155213. The reversal of 40013155212 is 21255131004.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (40013155213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1667214789 + ... + 1667214812.

It is an arithmetic number, because the mean of its divisors is an integer number (7780335738).

Almost surely, 2^40013155212 is an apocalyptic number.

It is an amenable number.

40013155212 is an abundant number, since it is smaller than the sum of its proper divisors (53350873644).

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

40013155212 is a wasteful number, since it uses less digits than its factorization.

40013155212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334429608 (or 3334429606 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 40013155212 its reverse (21255131004), we get a palindrome (61268286216).

The spelling of 40013155212 in words is "forty billion, thirteen million, one hundred fifty-five thousand, two hundred twelve".