8365656381 has 16 divisors (see below), whose sum is σ = 11432803008. Its totient is φ = 5439456000.

The previous prime is 8365656379. The next prime is 8365656391. The reversal of 8365656381 is 1836565638.

It is not a de Polignac number, because 8365656381 - 2¹ = 8365656379 is a prime.

It is a super-2 number, since 2×8365656381² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8365656331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185740 + ... + 226341.

It is an arithmetic number, because the mean of its divisors is an integer number (714550188).

Almost surely, 2^8365656381 is an apocalyptic number.

It is an amenable number.

8365656381 is a deficient number, since it is larger than the sum of its proper divisors (3067146627).

8365656381 is a wasteful number, since it uses less digits than its factorization.

8365656381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412252.

The product of its digits is 3110400, while the sum is 51.

The square root of 8365656381 is about 91463.9621982341. The cubic root of 8365656381 is about 2030.0185541106.

The spelling of 8365656381 in words is "eight billion, three hundred sixty-five million, six hundred fifty-six thousand, three hundred eighty-one".