40450520378 has 32 divisors (see below), whose sum is σ = 63145646928. Its totient is φ = 19419955200.

The previous prime is 40450520353. The next prime is 40450520413. The reversal of 40450520378 is 87302505404.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2172771769 + 38277748609 = 46613^2 + 195647^2 .

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1425626 + ... + 1453722.

Almost surely, 2^40450520378 is an apocalyptic number.

40450520378 is a deficient number, since it is larger than the sum of its proper divisors (22695126550).

40450520378 is a wasteful number, since it uses less digits than its factorization.

40450520378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28418.

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 40450520378 in words is "forty billion, four hundred fifty million, five hundred twenty thousand, three hundred seventy-eight".