7827505778328 has 16 divisors (see below), whose sum is σ = 19568764445880. Its totient is φ = 2609168592768.

The previous prime is 7827505778291. The next prime is 7827505778381. The reversal of 7827505778328 is 8238775057287.

It is a super-2 number, since 2×7827505778328² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163073037025 + ... + 163073037072.

Almost surely, 2^{7827505778328} is an apocalyptic number.

It is an amenable number.

7827505778328 is an abundant number, since it is smaller than the sum of its proper divisors (11741258667552).

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

7827505778328 is a wasteful number, since it uses less digits than its factorization.

7827505778328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326146074106 (or 326146074102 counting only the distinct ones).

The product of its (nonzero) digits is 368793600, while the sum is 69.

The spelling of 7827505778328 in words is "seven trillion, eight hundred twenty-seven billion, five hundred five million, seven hundred seventy-eight thousand, three hundred twenty-eight".