7877217225136 has 120 divisors (see below), whose sum is σ = 18054066965760. Its totient is φ = 3261456789120.

The previous prime is 7877217225131. The next prime is 7877217225139. The reversal of 7877217225136 is 6315227127787.

It is not an unprimeable number, because it can be changed into a prime (7877217225131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63117645 + ... + 63242323.

It is an arithmetic number, because the mean of its divisors is an integer number (150450558048).

Almost surely, 2^{7877217225136} 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 7877217225136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9027033482880).

7877217225136 is an abundant number, since it is smaller than the sum of its proper divisors (10176849740624).

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

7877217225136 is a wasteful number, since it uses less digits than its factorization.

7877217225136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125343 (or 125306 counting only the distinct ones).

The product of its digits is 13829760, while the sum is 58.

The spelling of 7877217225136 in words is "seven trillion, eight hundred seventy-seven billion, two hundred seventeen million, two hundred twenty-five thousand, one hundred thirty-six".