84785203857 has 16 divisors (see below), whose sum is σ = 114261009408. Its totient is φ = 55917554640.

The previous prime is 84785203847. The next prime is 84785203859. The reversal of 84785203857 is 75830258748.

It is not a de Polignac number, because 84785203857 - 2¹⁸ = 84784941713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84785203797 and 84785203806.

It is not an unprimeable number, because it can be changed into a prime (84785203859) 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, 164182 + ... + 443312.

It is an arithmetic number, because the mean of its divisors is an integer number (7141313088).

Almost surely, 2^84785203857 is an apocalyptic number.

It is an amenable number.

84785203857 is a deficient number, since it is larger than the sum of its proper divisors (29475805551).

84785203857 is a wasteful number, since it uses less digits than its factorization.

84785203857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280220.

The product of its (nonzero) digits is 15052800, while the sum is 57.

The spelling of 84785203857 in words is "eighty-four billion, seven hundred eighty-five million, two hundred three thousand, eight hundred fifty-seven".