128776246704 has 480 divisors, whose sum is σ = 438164812800. Its totient is φ = 34515486720.

The previous prime is 128776246693. The next prime is 128776246771. The reversal of 128776246704 is 407642677821.

128776246704 is a `hidden beast` number, since 1 + 2 + 8 + 7 + 7 + 624 + 6 + 7 + 0 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 331044142 + ... + 331044530.

It is an arithmetic number, because the mean of its divisors is an integer number (912843360).

Almost surely, 2^128776246704 is an apocalyptic number.

128776246704 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128776246704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219082406400).

128776246704 is an abundant number, since it is smaller than the sum of its proper divisors (309388566096).

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

128776246704 is a wasteful number, since it uses less digits than its factorization.

128776246704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 54.

The spelling of 128776246704 in words is "one hundred twenty-eight billion, seven hundred seventy-six million, two hundred forty-six thousand, seven hundred four".