865119774140 has 12 divisors (see below), whose sum is σ = 1816751525736. Its totient is φ = 346047909648.

The previous prime is 865119774133. The next prime is 865119774161. The reversal of 865119774140 is 41477911568.

It is a super-2 number, since 2×865119774140² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21627994334 + ... + 21627994373.

It is an arithmetic number, because the mean of its divisors is an integer number (151395960478).

Almost surely, 2^865119774140 is an apocalyptic number.

It is an amenable number.

865119774140 is an abundant number, since it is smaller than the sum of its proper divisors (951631751596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865119774140 is a wasteful number, since it uses less digits than its factorization.

865119774140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43255988716 (or 43255988714 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 53.

The spelling of 865119774140 in words is "eight hundred sixty-five billion, one hundred nineteen million, seven hundred seventy-four thousand, one hundred forty".