40531250040 has 64 divisors (see below), whose sum is σ = 121672605600. Its totient is φ = 10801324032.

The previous prime is 40531250033. The next prime is 40531250047. The reversal of 40531250040 is 4005213504.

It is an interprime number because it is at equal distance from previous prime (40531250033) and next prime (40531250047).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40531250047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77616 + ... + 295104.

Almost surely, 2^40531250040 is an apocalyptic number.

40531250040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40531250040 is an abundant number, since it is smaller than the sum of its proper divisors (81141355560).

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

40531250040 is a wasteful number, since it uses less digits than its factorization.

40531250040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219056 (or 219052 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 40531250040 its reverse (4005213504), we get a palindrome (44536463544).

The spelling of 40531250040 in words is "forty billion, five hundred thirty-one million, two hundred fifty thousand, forty".