865618108996 has 27 divisors (see below), whose sum is σ = 1519289681119. Its totient is φ = 431539077608.

The previous prime is 865618108967. The next prime is 865618109021. The reversal of 865618108996 is 699801816568.

The square root of 865618108996 is 930386.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×865618108996² (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 8 ways as a sum of consecutive naturals, for example, 1203919125 + ... + 1203919843.

Almost surely, 2^865618108996 is an apocalyptic number.

865618108996 is the 930386-th square number.

It is an amenable number.

865618108996 is a deficient number, since it is larger than the sum of its proper divisors (653671572123).

865618108996 is an frugal number, since it uses more digits than its factorization.

865618108996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 67.

The spelling of 865618108996 in words is "eight hundred sixty-five billion, six hundred eighteen million, one hundred eight thousand, nine hundred ninety-six".