40573667840 has 40 divisors (see below), whose sum is σ = 97281714420. Its totient is φ = 16229466112.

The previous prime is 40573667821. The next prime is 40573667843. The reversal of 40573667840 is 4876637504.

It can be written as a sum of positive squares in 2 ways, for example, as 37722962176 + 2850705664 = 194224^2 + 53392^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (40573667843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7921985 + ... + 7927104.

Almost surely, 2^40573667840 is an apocalyptic number.

40573667840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40573667840 is an abundant number, since it is smaller than the sum of its proper divisors (56708046580).

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

40573667840 is an equidigital number, since it uses as much as digits as its factorization.

40573667840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15849112 (or 15849096 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 50.

The spelling of 40573667840 in words is "forty billion, five hundred seventy-three million, six hundred sixty-seven thousand, eight hundred forty".