8077432880 has 80 divisors (see below), whose sum is σ = 20506500000. Its totient is φ = 2934497280.

The previous prime is 8077432877. The next prime is 8077432903. The reversal of 8077432880 is 882347708.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1095446 + ... + 1102794.

It is an arithmetic number, because the mean of its divisors is an integer number (256331250).

Almost surely, 2^8077432880 is an apocalyptic number.

8077432880 is a gapful number since it is divisible by the number (80) 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 8077432880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10253250000).

8077432880 is an abundant number, since it is smaller than the sum of its proper divisors (12429067120).

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

8077432880 is a wasteful number, since it uses less digits than its factorization.

8077432880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8622 (or 8616 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 47.

The square root of 8077432880 is about 89874.5396650242. The cubic root of 8077432880 is about 2006.4320323052.

The spelling of 8077432880 in words is "eight billion, seventy-seven million, four hundred thirty-two thousand, eight hundred eighty".