7884156399876 has 135 divisors (see below), whose sum is σ = 21064945746999. Its totient is φ = 2571361157232.

The previous prime is 7884156399863. The next prime is 7884156399883. The reversal of 7884156399876 is 6789936514887.

The square root of 7884156399876 is 2807874.

It is a perfect power (a square), and thus also a powerful number.

7884156399876 is a `hidden beast` number, since 7 + 8 + 8 + 4 + 156 + 399 + 8 + 76 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a junction number, because it is equal to n+sod(n) for n = 7884156399795 and 7884156399804.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 2375459745 + ... + 2375463063.

Almost surely, 2^{7884156399876} is an apocalyptic number.

7884156399876 is the 2807874-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7884156399876

7884156399876 is an abundant number, since it is smaller than the sum of its proper divisors (13180789347123).

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

7884156399876 is an frugal number, since it uses more digits than its factorization.

7884156399876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6748 (or 3371 counting only the distinct ones).

The product of its digits is 4389396480, while the sum is 81.

Multiplying 7884156399876 by its sum of digits (81), we get a square (638616668389956 = 25270866²).

7884156399876 divided by its sum of digits (81) gives a square (97335264196 = 311986²).

The spelling of 7884156399876 in words is "seven trillion, eight hundred eighty-four billion, one hundred fifty-six million, three hundred ninety-nine thousand, eight hundred seventy-six".