6522778998384 has 80 divisors (see below), whose sum is σ = 18383545473024. Its totient is φ = 1976474073600.

The previous prime is 6522778998353. The next prime is 6522778998389. The reversal of 6522778998384 is 4838998772256.

It is a super-2 number, since 2×6522778998384² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6522778998389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8096724 + ... + 8865804.

Almost surely, 2^{6522778998384} is an apocalyptic number.

It is an amenable number.

6522778998384 is an abundant number, since it is smaller than the sum of its proper divisors (11860766474640).

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

6522778998384 is a wasteful number, since it uses less digits than its factorization.

6522778998384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785166 (or 785160 counting only the distinct ones).

The product of its digits is 2926264320, while the sum is 78.

The spelling of 6522778998384 in words is "six trillion, five hundred twenty-two billion, seven hundred seventy-eight million, nine hundred ninety-eight thousand, three hundred eighty-four".