82378717026 has 16 divisors (see below), whose sum is σ = 165768217824. Its totient is φ = 27291108384.

The previous prime is 82378717021. The next prime is 82378717049. The reversal of 82378717026 is 62071787328.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 82378717026.

It is not an unprimeable number, because it can be changed into a prime (82378717021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42114931 + ... + 42116886.

It is an arithmetic number, because the mean of its divisors is an integer number (10360513614).

Almost surely, 2^82378717026 is an apocalyptic number.

82378717026 is an abundant number, since it is smaller than the sum of its proper divisors (83389500798).

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

82378717026 is a wasteful number, since it uses less digits than its factorization.

82378717026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84231985.

The product of its (nonzero) digits is 1580544, while the sum is 51.

The spelling of 82378717026 in words is "eighty-two billion, three hundred seventy-eight million, seven hundred seventeen thousand, twenty-six".