6781550200465 has 8 divisors (see below), whose sum is σ = 8212519509480. Its totient is φ = 5375467314432.

The previous prime is 6781550200417. The next prime is 6781550200483. The reversal of 6781550200465 is 5640020551876.

It can be written as a sum of positive squares in 4 ways, for example, as 907126714624 + 5874423485841 = 952432^2 + 2423721^2 .

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 6781550200465 - 2²⁹ = 6781013329553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6221605144 + ... + 6221606233.

It is an arithmetic number, because the mean of its divisors is an integer number (1026564938685).

Almost surely, 2^{6781550200465} is an apocalyptic number.

It is an amenable number.

6781550200465 is a deficient number, since it is larger than the sum of its proper divisors (1430969309015).

6781550200465 is a wasteful number, since it uses less digits than its factorization.

6781550200465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12443211491.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 6781550200465 in words is "six trillion, seven hundred eighty-one billion, five hundred fifty million, two hundred thousand, four hundred sixty-five".