40144542531 has 8 divisors (see below), whose sum is σ = 53854438080. Its totient is φ = 26598837672.

The previous prime is 40144542517. The next prime is 40144542589. The reversal of 40144542531 is 13524544104.

It is a happy number.

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

It is not a de Polignac number, because 40144542531 - 2⁵ = 40144542499 is a prime.

It is a super-2 number, since 2×40144542531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40144542492 and 40144542501.

It is not an unprimeable number, because it can be changed into a prime (40144552531) 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, 41047101 + ... + 41048078.

It is an arithmetic number, because the mean of its divisors is an integer number (6731804760).

Almost surely, 2^40144542531 is an apocalyptic number.

40144542531 is a deficient number, since it is larger than the sum of its proper divisors (13709895549).

40144542531 is a wasteful number, since it uses less digits than its factorization.

40144542531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82095345.

The product of its (nonzero) digits is 38400, while the sum is 33.

The spelling of 40144542531 in words is "forty billion, one hundred forty-four million, five hundred forty-two thousand, five hundred thirty-one".