830657381785 has 24 divisors (see below), whose sum is σ = 1264941709056. Its totient is φ = 517812392160.

The previous prime is 830657381767. The next prime is 830657381821. The reversal of 830657381785 is 587183756038.

It is not a de Polignac number, because 830657381785 - 2⁹ = 830657381273 is a prime.

It is a super-2 number, since 2×830657381785² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154108137 + ... + 154113526.

It is an arithmetic number, because the mean of its divisors is an integer number (52705904544).

Almost surely, 2^830657381785 is an apocalyptic number.

It is an amenable number.

830657381785 is a deficient number, since it is larger than the sum of its proper divisors (434284327271).

830657381785 is a wasteful number, since it uses less digits than its factorization.

830657381785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308221693 (or 308221686 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 61.

The spelling of 830657381785 in words is "eight hundred thirty billion, six hundred fifty-seven million, three hundred eighty-one thousand, seven hundred eighty-five".