6522788078399 has 4 divisors (see below), whose sum is σ = 6538736215920. Its totient is φ = 6506839940880.

The previous prime is 6522788078383. The next prime is 6522788078407. The reversal of 6522788078399 is 9938708872256.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6522788078399 - 2⁴ = 6522788078383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6522788078369) 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, 7974068147 + ... + 7974068964.

It is an arithmetic number, because the mean of its divisors is an integer number (1634684053980).

Almost surely, 2^{6522788078399} is an apocalyptic number.

6522788078399 is a deficient number, since it is larger than the sum of its proper divisors (15948137521).

6522788078399 is a wasteful number, since it uses less digits than its factorization.

6522788078399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15948137520.

The product of its (nonzero) digits is 731566080, while the sum is 74.

The spelling of 6522788078399 in words is "six trillion, five hundred twenty-two billion, seven hundred eighty-eight million, seventy-eight thousand, three hundred ninety-nine".