8077091280 has 80 divisors (see below), whose sum is σ = 25050569280. Its totient is φ = 2152894464.

The previous prime is 8077091227. The next prime is 8077091287. The reversal of 8077091280 is 821907708.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8077091287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615831 + ... + 628809.

It is an arithmetic number, because the mean of its divisors is an integer number (313132116).

Almost surely, 2^8077091280 is an apocalyptic number.

8077091280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8077091280 is an abundant number, since it is smaller than the sum of its proper divisors (16973478000).

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

8077091280 is a wasteful number, since it uses less digits than its factorization.

8077091280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15588 (or 15582 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 8077091280 is about 89872.6392179511. The cubic root of 8077091280 is about 2006.4037474588.

Adding to 8077091280 its reverse (821907708), we get a palindrome (8898998988).

The spelling of 8077091280 in words is "eight billion, seventy-seven million, ninety-one thousand, two hundred eighty".