65821055366 has 8 divisors (see below), whose sum is σ = 107707181544. Its totient is φ = 29918661520.

The previous prime is 65821055323. The next prime is 65821055369. The reversal of 65821055366 is 66355012856.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×65821055366² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65821055366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65821055369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1495933055 + ... + 1495933098.

It is an arithmetic number, because the mean of its divisors is an integer number (13463397693).

Almost surely, 2^65821055366 is an apocalyptic number.

65821055366 is a deficient number, since it is larger than the sum of its proper divisors (41886126178).

65821055366 is a wasteful number, since it uses less digits than its factorization.

65821055366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991866166.

The product of its (nonzero) digits is 1296000, while the sum is 47.

The spelling of 65821055366 in words is "sixty-five billion, eight hundred twenty-one million, fifty-five thousand, three hundred sixty-six".