78784604843407 has 16 divisors (see below), whose sum is σ = 82948282243200. Its totient is φ = 74622641277600.

The previous prime is 78784604843359. The next prime is 78784604843431. The reversal of 78784604843407 is 70434840648787.

It is a cyclic number.

It is not a de Polignac number, because 78784604843407 - 2¹⁹ = 78784604319119 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 (78784604849407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2911572444 + ... + 2911599502.

It is an arithmetic number, because the mean of its divisors is an integer number (5184267640200).

Almost surely, 2^{78784604843407} is an apocalyptic number.

78784604843407 is a deficient number, since it is larger than the sum of its proper divisors (4163677399793).

78784604843407 is a wasteful number, since it uses less digits than its factorization.

78784604843407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53046.

The product of its (nonzero) digits is 809238528, while the sum is 70.

The spelling of 78784604843407 in words is "seventy-eight trillion, seven hundred eighty-four billion, six hundred four million, eight hundred forty-three thousand, four hundred seven".