40245031540 has 96 divisors (see below), whose sum is σ = 100956925440. Its totient is φ = 13176193536.

The previous prime is 40245031537. The next prime is 40245031543. The reversal of 40245031540 is 4513054204.

It is an interprime number because it is at equal distance from previous prime (40245031537) and next prime (40245031543).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 40245031499 and 40245031508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40245031543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1963666 + ... + 1984054.

It is an arithmetic number, because the mean of its divisors is an integer number (1051634640).

Almost surely, 2^40245031540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40245031540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50478462720).

40245031540 is an abundant number, since it is smaller than the sum of its proper divisors (60711893900).

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

40245031540 is a wasteful number, since it uses less digits than its factorization.

40245031540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21041 (or 21039 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 40245031540 its reverse (4513054204), we get a palindrome (44758085744).

The spelling of 40245031540 in words is "forty billion, two hundred forty-five million, thirty-one thousand, five hundred forty".