65006551621199 has 8 divisors (see below), whose sum is σ = 68849422826688. Its totient is φ = 61165786682880.

The previous prime is 65006551621169. The next prime is 65006551621243. The reversal of 65006551621199 is 99112615560056.

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

It is a cyclic number.

It is not a de Polignac number, because 65006551621199 - 2¹⁶ = 65006551555663 is a prime.

It is a super-2 number, since 2×65006551621199² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65006551621169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526503242 + ... + 526626695.

It is an arithmetic number, because the mean of its divisors is an integer number (8606177853336).

Almost surely, 2^{65006551621199} is an apocalyptic number.

65006551621199 is a deficient number, since it is larger than the sum of its proper divisors (3842871205489).

65006551621199 is a wasteful number, since it uses less digits than its factorization.

65006551621199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053133585.

The product of its (nonzero) digits is 4374000, while the sum is 56.

The spelling of 65006551621199 in words is "sixty-five trillion, six billion, five hundred fifty-one million, six hundred twenty-one thousand, one hundred ninety-nine".