42496678972778 has 32 divisors (see below), whose sum is σ = 64029346974720. Its totient is φ = 21153786734080.

The previous prime is 42496678972723. The next prime is 42496678972789. The reversal of 42496678972778 is 87727987669424.

42496678972778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42496678972778.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1289441876 + ... + 1289474832.

It is an arithmetic number, because the mean of its divisors is an integer number (2000917092960).

Almost surely, 2^{42496678972778} is an apocalyptic number.

42496678972778 is a deficient number, since it is larger than the sum of its proper divisors (21532668001942).

42496678972778 is a wasteful number, since it uses less digits than its factorization.

42496678972778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36262.

The product of its digits is 28677390336, while the sum is 86.

The spelling of 42496678972778 in words is "forty-two trillion, four hundred ninety-six billion, six hundred seventy-eight million, nine hundred seventy-two thousand, seven hundred seventy-eight".