80443780000 has 60 divisors (see below), whose sum is σ = 197903814570. Its totient is φ = 32177504000.

The previous prime is 80443779991. The next prime is 80443780007. The reversal of 80443780000 is 8734408.

It can be written as a sum of positive squares in 5 ways, for example, as 1070860176 + 79372919824 = 32724^2 + 281732^2 .

It is not an unprimeable number, because it can be changed into a prime (80443780007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1991095 + ... + 2031094.

Almost surely, 2^80443780000 is an apocalyptic number.

80443780000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80443780000 is an abundant number, since it is smaller than the sum of its proper divisors (117460034570).

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

80443780000 is an equidigital number, since it uses as much as digits as its factorization.

80443780000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022219 (or 4022196 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The spelling of 80443780000 in words is "eighty billion, four hundred forty-three million, seven hundred eighty thousand".