74040340040 has 32 divisors (see below), whose sum is σ = 176390223480. Its totient is φ = 27874010112.

The previous prime is 74040340021. The next prime is 74040340043. The reversal of 74040340040 is 4004304047.

It can be written as a sum of positive squares in 4 ways, for example, as 63100435204 + 10939904836 = 251198^2 + 104594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 74040339991 and 74040340009.

It is not an unprimeable number, because it can be changed into a prime (74040340043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54440747 + ... + 54442106.

Almost surely, 2^74040340040 is an apocalyptic number.

It is an amenable number.

74040340040 is an abundant number, since it is smaller than the sum of its proper divisors (102349883440).

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

74040340040 is a wasteful number, since it uses less digits than its factorization.

74040340040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108882881 (or 108882877 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

Adding to 74040340040 its reverse (4004304047), we get a palindrome (78044644087).

The spelling of 74040340040 in words is "seventy-four billion, forty million, three hundred forty thousand, forty".