82817981480 has 32 divisors (see below), whose sum is σ = 200674341000. Its totient is φ = 30578946816.

The previous prime is 82817981479. The next prime is 82817981497. The reversal of 82817981480 is 8418971828.

It can be written as a sum of positive squares in 4 ways, for example, as 69663267844 + 13154713636 = 263938^2 + 114694^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79632155 + ... + 79633194.

Almost surely, 2^82817981480 is an apocalyptic number.

It is an amenable number.

82817981480 is an abundant number, since it is smaller than the sum of its proper divisors (117856359520).

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

82817981480 is a wasteful number, since it uses less digits than its factorization.

82817981480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159265373 (or 159265369 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 56.

The spelling of 82817981480 in words is "eighty-two billion, eight hundred seventeen million, nine hundred eighty-one thousand, four hundred eighty".