40404037212 has 108 divisors (see below), whose sum is σ = 129607817976. Its totient is φ = 10494550080.

The previous prime is 40404037189. The next prime is 40404037213. The reversal of 40404037212 is 21273040404.

40404037212 is a `hidden beast` number, since 4 + 0 + 40 + 403 + 7 + 212 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40404037213) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1021723 + ... + 1060530.

Almost surely, 2^40404037212 is an apocalyptic number.

40404037212 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40404037212 is an abundant number, since it is smaller than the sum of its proper divisors (89203780764).

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

40404037212 is a wasteful number, since it uses less digits than its factorization.

40404037212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082288 (or 2082276 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

Adding to 40404037212 its reverse (21273040404), we get a palindrome (61677077616).

The spelling of 40404037212 in words is "forty billion, four hundred four million, thirty-seven thousand, two hundred twelve".