78428390359 has 16 divisors (see below), whose sum is σ = 90990210816. Its totient is φ = 66808854400.

The previous prime is 78428390357. The next prime is 78428390363. The reversal of 78428390359 is 95309382487.

It is a cyclic number.

It is not a de Polignac number, because 78428390359 - 2¹ = 78428390357 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 (78428390357) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 881347 + ... + 966244.

It is an arithmetic number, because the mean of its divisors is an integer number (5686888176).

Almost surely, 2^78428390359 is an apocalyptic number.

78428390359 is a deficient number, since it is larger than the sum of its proper divisors (12561820457).

78428390359 is a wasteful number, since it uses less digits than its factorization.

78428390359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847846.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 78428390359 in words is "seventy-eight billion, four hundred twenty-eight million, three hundred ninety thousand, three hundred fifty-nine".