40800773778 has 16 divisors (see below), whose sum is σ = 85149441216. Its totient is φ = 13008942320.

The previous prime is 40800773777. The next prime is 40800773803. The reversal of 40800773778 is 87737700804.

It is a self number, because there is not a number n which added to its sum of digits gives 40800773778.

It is not an unprimeable number, because it can be changed into a prime (40800773771) 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, 147828753 + ... + 147829028.

It is an arithmetic number, because the mean of its divisors is an integer number (5321840076).

Almost surely, 2^40800773778 is an apocalyptic number.

40800773778 is an abundant number, since it is smaller than the sum of its proper divisors (44348667438).

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

40800773778 is a wasteful number, since it uses less digits than its factorization.

40800773778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295657809.

The product of its (nonzero) digits is 1843968, while the sum is 51.

The spelling of 40800773778 in words is "forty billion, eight hundred million, seven hundred seventy-three thousand, seven hundred seventy-eight".