817608070080 has 672 divisors, whose sum is σ = 3002284486656. Its totient is φ = 203766571008.

The previous prime is 817608070079. The next prime is 817608070087. The reversal of 817608070080 is 80070806718.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (817608070087) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1625463109 + ... + 1625463611.

It is an arithmetic number, because the mean of its divisors is an integer number (4467685248).

Almost surely, 2^817608070080 is an apocalyptic number.

817608070080 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 817608070080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1501142243328).

817608070080 is an abundant number, since it is smaller than the sum of its proper divisors (2184676416576).

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

817608070080 is a wasteful number, since it uses less digits than its factorization.

817608070080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

Adding to 817608070080 its reverse (80070806718), we get a palindrome (897678876798).

The spelling of 817608070080 in words is "eight hundred seventeen billion, six hundred eight million, seventy thousand, eighty".