832140378647 has 4 divisors (see below), whose sum is σ = 851492480520. Its totient is φ = 812788276776.

The previous prime is 832140378613. The next prime is 832140378659. The reversal of 832140378647 is 746873041238.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 832140378647 - 2²⁸ = 831871943191 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 (832140378607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9676050872 + ... + 9676050957.

It is an arithmetic number, because the mean of its divisors is an integer number (212873120130).

Almost surely, 2^832140378647 is an apocalyptic number.

832140378647 is a deficient number, since it is larger than the sum of its proper divisors (19352101873).

832140378647 is a wasteful number, since it uses less digits than its factorization.

832140378647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19352101872.

The product of its (nonzero) digits is 5419008, while the sum is 53.

The spelling of 832140378647 in words is "eight hundred thirty-two billion, one hundred forty million, three hundred seventy-eight thousand, six hundred forty-seven".