40012434320 has 40 divisors (see below), whose sum is σ = 93167265336. Its totient is φ = 15981170688.

The previous prime is 40012434317. The next prime is 40012434337. The reversal of 40012434320 is 2343421004.

It can be written as a sum of positive squares in 4 ways, for example, as 5119688704 + 34892745616 = 71552^2 + 186796^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317747 + ... + 425426.

Almost surely, 2^40012434320 is an apocalyptic number.

40012434320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40012434320 is an abundant number, since it is smaller than the sum of its proper divisors (53154831016).

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

40012434320 is a wasteful number, since it uses less digits than its factorization.

40012434320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743859 (or 743853 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 40012434320 its reverse (2343421004), we get a palindrome (42355855324).

The spelling of 40012434320 in words is "forty billion, twelve million, four hundred thirty-four thousand, three hundred twenty".