80312500000 has 132 divisors (see below), whose sum is σ = 198413081874. Its totient is φ = 32000000000.

The previous prime is 80312499991. The next prime is 80312500013. The reversal of 80312500000 is 521308.

It is a happy number.

It can be written as a sum of positive squares in 11 ways, for example, as 41239861776 + 39072638224 = 203076^2 + 197668^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 21 ways as a sum of consecutive naturals, for example, 312499872 + ... + 312500128.

Almost surely, 2^80312500000 is an apocalyptic number.

80312500000 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 80312500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99206540937).

80312500000 is an abundant number, since it is smaller than the sum of its proper divisors (118100581874).

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

80312500000 is an frugal number, since it uses more digits than its factorization.

80312500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The spelling of 80312500000 in words is "eighty billion, three hundred twelve million, five hundred thousand".