865420870910 has 32 divisors (see below), whose sum is σ = 1639980950400. Its totient is φ = 327901733280.

The previous prime is 865420870871. The next prime is 865420870931. The reversal of 865420870910 is 19078024568.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009145 + ... + 1658075.

It is an arithmetic number, because the mean of its divisors is an integer number (51249404700).

Almost surely, 2^865420870910 is an apocalyptic number.

865420870910 is a deficient number, since it is larger than the sum of its proper divisors (774560079490).

865420870910 is a wasteful number, since it uses less digits than its factorization.

865420870910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655976.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 865420870910 in words is "eight hundred sixty-five billion, four hundred twenty million, eight hundred seventy thousand, nine hundred ten".