77383131280 has 160 divisors (see below), whose sum is σ = 223719681024. Its totient is φ = 24237785088.

The previous prime is 77383131269. The next prime is 77383131313. The reversal of 77383131280 is 8213138377.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 651369 + ... + 760951.

Almost surely, 2^77383131280 is an apocalyptic number.

77383131280 is a gapful number since it is divisible by the number (70) 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 77383131280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111859840512).

77383131280 is an abundant number, since it is smaller than the sum of its proper divisors (146336549744).

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

77383131280 is a wasteful number, since it uses less digits than its factorization.

77383131280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109713 (or 109707 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 77383131280 in words is "seventy-seven billion, three hundred eighty-three million, one hundred thirty-one thousand, two hundred eighty".