80280780500 has 48 divisors (see below), whose sum is σ = 176119716864. Its totient is φ = 31968266400.

The previous prime is 80280780479. The next prime is 80280780539. The reversal of 80280780500 is 508708208.

It is a congruent number.

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, 248504 + ... + 471503.

It is an arithmetic number, because the mean of its divisors is an integer number (3669160768).

Almost surely, 2^80280780500 is an apocalyptic number.

It is an amenable number.

80280780500 is an abundant number, since it is smaller than the sum of its proper divisors (95838936364).

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

80280780500 is a wasteful number, since it uses less digits than its factorization.

80280780500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720249 (or 720237 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 38.

The spelling of 80280780500 in words is "eighty billion, two hundred eighty million, seven hundred eighty thousand, five hundred".