82317182217778 has 8 divisors (see below), whose sum is σ = 123931403487360. Its totient is φ = 41006714388660.

The previous prime is 82317182217713. The next prime is 82317182217821. The reversal of 82317182217778 is 87771228171328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×82317182217778² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75938359438 + ... + 75938360521.

It is an arithmetic number, because the mean of its divisors is an integer number (15491425435920).

Almost surely, 2^{82317182217778} is an apocalyptic number.

82317182217778 is a deficient number, since it is larger than the sum of its proper divisors (41614221269582).

82317182217778 is a wasteful number, since it uses less digits than its factorization.

82317182217778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151876720232.

The product of its digits is 29503488, while the sum is 64.

The spelling of 82317182217778 in words is "eighty-two trillion, three hundred seventeen billion, one hundred eighty-two million, two hundred seventeen thousand, seven hundred seventy-eight".