40036400647278 has 32 divisors (see below), whose sum is σ = 91514276265984. Its totient is φ = 11438658693792.

The previous prime is 40036400647261. The next prime is 40036400647381. The reversal of 40036400647278 is 87274600463004.

It is a self number, because there is not a number n which added to its sum of digits gives 40036400647278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11482525 + ... + 14557512.

It is an arithmetic number, because the mean of its divisors is an integer number (2859821133312).

Almost surely, 2^{40036400647278} is an apocalyptic number.

40036400647278 is an abundant number, since it is smaller than the sum of its proper divisors (51477875618706).

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

40036400647278 is a wasteful number, since it uses less digits than its factorization.

40036400647278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26076656.

The product of its (nonzero) digits is 5419008, while the sum is 51.

The spelling of 40036400647278 in words is "forty trillion, thirty-six billion, four hundred million, six hundred forty-seven thousand, two hundred seventy-eight".