40278709389993 has 8 divisors (see below), whose sum is σ = 53732472742656. Its totient is φ = 26838709482000.

The previous prime is 40278709389943. The next prime is 40278709390091. The reversal of 40278709389993 is 39998390787204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40278709389993 - 2⁹ = 40278709389481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40278709389943) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3440854338 + ... + 3440866043.

It is an arithmetic number, because the mean of its divisors is an integer number (6716559092832).

Almost surely, 2^{40278709389993} is an apocalyptic number.

It is an amenable number.

40278709389993 is a deficient number, since it is larger than the sum of its proper divisors (13453763352663).

40278709389993 is a wasteful number, since it uses less digits than its factorization.

40278709389993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6881722335.

The product of its (nonzero) digits is 1481421312, while the sum is 78.

The spelling of 40278709389993 in words is "forty trillion, two hundred seventy-eight billion, seven hundred nine million, three hundred eighty-nine thousand, nine hundred ninety-three".