40404037312 has 14 divisors (see below), whose sum is σ = 80176761668. Its totient is φ = 20202018624.

The previous prime is 40404037307. The next prime is 40404037313. The reversal of 40404037312 is 21373040404.

It is a super-2 number, since 2×40404037312² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40404037313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315656478 + ... + 315656605.

Almost surely, 2^40404037312 is an apocalyptic number.

It is an amenable number.

40404037312 is a deficient number, since it is larger than the sum of its proper divisors (39772724356).

40404037312 is an equidigital number, since it uses as much as digits as its factorization.

40404037312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631313095 (or 631313085 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 40404037312 its reverse (21373040404), we get a palindrome (61777077716).

The spelling of 40404037312 in words is "forty billion, four hundred four million, thirty-seven thousand, three hundred twelve".