40012040452 has 6 divisors (see below), whose sum is σ = 70021070798. Its totient is φ = 20006020224.

The previous prime is 40012040441. The next prime is 40012040489. The reversal of 40012040452 is 25404021004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 37401239236 + 2610801216 = 193394^2 + 51096^2 .

It is a super-2 number, since 2×40012040452² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001505053 + ... + 5001505060.

Almost surely, 2^40012040452 is an apocalyptic number.

It is an amenable number.

40012040452 is a deficient number, since it is larger than the sum of its proper divisors (30009030346).

40012040452 is a wasteful number, since it uses less digits than its factorization.

40012040452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10003010117 (or 10003010115 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 40012040452 its reverse (25404021004), we get a palindrome (65416061456).

The spelling of 40012040452 in words is "forty billion, twelve million, forty thousand, four hundred fifty-two".