7828866755892 has 384 divisors, whose sum is σ = 26471535713280. Its totient is φ = 1941752217600.

The previous prime is 7828866755821. The next prime is 7828866755903. The reversal of 7828866755892 is 2985576688287.

It is a happy number.

7828866755892 is a `hidden beast` number, since 7 + 8 + 28 + 8 + 6 + 6 + 7 + 5 + 589 + 2 = 666.

It is a super-2 number, since 2×7828866755892² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 217347868 + ... + 217383884.

It is an arithmetic number, because the mean of its divisors is an integer number (68936290920).

Almost surely, 2^{7828866755892} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7828866755892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13235767856640).

7828866755892 is an abundant number, since it is smaller than the sum of its proper divisors (18642668957388).

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

7828866755892 is a wasteful number, since it uses less digits than its factorization.

7828866755892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37368 (or 37360 counting only the distinct ones).

The product of its digits is 6502809600, while the sum is 81.

The spelling of 7828866755892 in words is "seven trillion, eight hundred twenty-eight billion, eight hundred sixty-six million, seven hundred fifty-five thousand, eight hundred ninety-two".