40777743851338 has 64 divisors (see below), whose sum is σ = 68638812147360. Its totient is φ = 18039808991232.

The previous prime is 40777743851263. The next prime is 40777743851359. The reversal of 40777743851338 is 83315834777704.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 4928102524489 + 35849641326849 = 2219933^2 + 5987457^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58860456 + ... + 59549212.

Almost surely, 2^{40777743851338} is an apocalyptic number.

40777743851338 is a deficient number, since it is larger than the sum of its proper divisors (27861068296022).

40777743851338 is a wasteful number, since it uses less digits than its factorization.

40777743851338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689371.

The product of its (nonzero) digits is 331914240, while the sum is 67.

The spelling of 40777743851338 in words is "forty trillion, seven hundred seventy-seven billion, seven hundred forty-three million, eight hundred fifty-one thousand, three hundred thirty-eight".