78002444420087 has 64 divisors (see below), whose sum is σ = 87407515238400. Its totient is φ = 69018911280000.

The previous prime is 78002444420071. The next prime is 78002444420099.

78002444420087 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78002444420087 - 2⁴ = 78002444420071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78002444420387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7889389658 + ... + 7889399544.

It is an arithmetic number, because the mean of its divisors is an integer number (1365742425600).

Almost surely, 2^{78002444420087} is an apocalyptic number.

78002444420087 is a deficient number, since it is larger than the sum of its proper divisors (9405070818313).

78002444420087 is a wasteful number, since it uses less digits than its factorization.

78002444420087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10604.

The product of its (nonzero) digits is 3211264, while the sum is 50.

The spelling of 78002444420087 in words is "seventy-eight trillion, two billion, four hundred forty-four million, four hundred twenty thousand, eighty-seven".