40778683740287 has 4 divisors (see below), whose sum is σ = 42094125151296. Its totient is φ = 39463242329280.

The previous prime is 40778683740257. The next prime is 40778683740343. The reversal of 40778683740287 is 78204738687704.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40778683740287 - 2¹⁰ = 40778683739263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40778683740287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40778683740247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657720705458 + ... + 657720705519.

It is an arithmetic number, because the mean of its divisors is an integer number (10523531287824).

Almost surely, 2^{40778683740287} is an apocalyptic number.

40778683740287 is a deficient number, since it is larger than the sum of its proper divisors (1315441411009).

40778683740287 is a wasteful number, since it uses less digits than its factorization.

40778683740287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315441411008.

The product of its (nonzero) digits is 708083712, while the sum is 71.

The spelling of 40778683740287 in words is "forty trillion, seven hundred seventy-eight billion, six hundred eighty-three million, seven hundred forty thousand, two hundred eighty-seven".