83278826785 has 32 divisors (see below), whose sum is σ = 125544950784. Its totient is φ = 51517752000.

The previous prime is 83278826779. The next prime is 83278826819. The reversal of 83278826785 is 58762887238.

It is not a de Polignac number, because 83278826785 - 2²⁵ = 83245272353 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 775171 + ... + 876040.

It is an arithmetic number, because the mean of its divisors is an integer number (3923279712).

Almost surely, 2^83278826785 is an apocalyptic number.

It is an amenable number.

83278826785 is a deficient number, since it is larger than the sum of its proper divisors (42266123999).

83278826785 is a wasteful number, since it uses less digits than its factorization.

83278826785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651365.

The product of its digits is 72253440, while the sum is 64.

The spelling of 83278826785 in words is "eighty-three billion, two hundred seventy-eight million, eight hundred twenty-six thousand, seven hundred eighty-five".