840146865830 has 16 divisors (see below), whose sum is σ = 1512300219264. Its totient is φ = 336050777280.

The previous prime is 840146865827. The next prime is 840146865871. The reversal of 840146865830 is 38568641048.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543551 + ... + 1405610.

It is an arithmetic number, because the mean of its divisors is an integer number (94518763704).

Almost surely, 2^840146865830 is an apocalyptic number.

840146865830 is a deficient number, since it is larger than the sum of its proper divisors (672153353434).

840146865830 is a wasteful number, since it uses less digits than its factorization.

840146865830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992271.

The product of its (nonzero) digits is 4423680, while the sum is 53.

The spelling of 840146865830 in words is "eight hundred forty billion, one hundred forty-six million, eight hundred sixty-five thousand, eight hundred thirty".