787378828347 has 12 divisors (see below), whose sum is σ = 1165064608344. Its totient is φ = 512116310880.

The previous prime is 787378828321. The next prime is 787378828381. The reversal of 787378828347 is 743828873787.

It is a happy number.

787378828347 is a `hidden beast` number, since 78 + 73 + 78 + 82 + 8 + 347 = 666.

It is not a de Polignac number, because 787378828347 - 2⁷ = 787378828219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (787378828387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1066908613 + ... + 1066909350.

It is an arithmetic number, because the mean of its divisors is an integer number (97088717362).

Almost surely, 2^787378828347 is an apocalyptic number.

787378828347 is a deficient number, since it is larger than the sum of its proper divisors (377685779997).

787378828347 is a wasteful number, since it uses less digits than its factorization.

787378828347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133818010 (or 2133818007 counting only the distinct ones).

The product of its digits is 708083712, while the sum is 72.

The spelling of 787378828347 in words is "seven hundred eighty-seven billion, three hundred seventy-eight million, eight hundred twenty-eight thousand, three hundred forty-seven".