6551214238368 has 72 divisors (see below), whose sum is σ = 19320016087008. Its totient is φ = 2183738076864.

The previous prime is 6551214238357. The next prime is 6551214238379. The reversal of 6551214238368 is 8638324121556.

6551214238368 is a `hidden beast` number, since 6 + 5 + 512 + 1 + 42 + 3 + 83 + 6 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (6551214238357) and next prime (6551214238379).

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×6551214238368² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 421237996 + ... + 421253547.

It is an arithmetic number, because the mean of its divisors is an integer number (268333556764).

Almost surely, 2^{6551214238368} is an apocalyptic number.

It is an amenable number.

6551214238368 is an abundant number, since it is smaller than the sum of its proper divisors (12768801848640).

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

6551214238368 is an equidigital number, since it uses as much as digits as its factorization.

6551214238368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842491568 (or 842491548 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The spelling of 6551214238368 in words is "six trillion, five hundred fifty-one billion, two hundred fourteen million, two hundred thirty-eight thousand, three hundred sixty-eight".