40013431451 has 8 divisors (see below), whose sum is σ = 46173613824. Its totient is φ = 33964243560.

The previous prime is 40013431433. The next prime is 40013431457. The reversal of 40013431451 is 15413431004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40013431451 - 2³⁴ = 22833562267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40013431451.

It is not an unprimeable number, because it can be changed into a prime (40013431457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27747845 + ... + 27749286.

It is an arithmetic number, because the mean of its divisors is an integer number (5771701728).

Almost surely, 2^40013431451 is an apocalyptic number.

40013431451 is a deficient number, since it is larger than the sum of its proper divisors (6160182373).

40013431451 is a wasteful number, since it uses less digits than its factorization.

40013431451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55497241.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 40013431451 its reverse (15413431004), we get a palindrome (55426862455).

The spelling of 40013431451 in words is "forty billion, thirteen million, four hundred thirty-one thousand, four hundred fifty-one".