40282987978 has 8 divisors (see below), whose sum is σ = 63604717920. Its totient is φ = 19081415340.

The previous prime is 40282987963. The next prime is 40282988021. The reversal of 40282987978 is 87978928204.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530039278 + ... + 530039353.

It is an arithmetic number, because the mean of its divisors is an integer number (7950589740).

Almost surely, 2^40282987978 is an apocalyptic number.

40282987978 is a deficient number, since it is larger than the sum of its proper divisors (23321729942).

40282987978 is a wasteful number, since it uses less digits than its factorization.

40282987978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060078652.

The product of its (nonzero) digits is 32514048, while the sum is 64.

The spelling of 40282987978 in words is "forty billion, two hundred eighty-two million, nine hundred eighty-seven thousand, nine hundred seventy-eight".