82523139078 has 16 divisors (see below), whose sum is σ = 165049099056. Its totient is φ = 27507242880.

The previous prime is 82523139077. The next prime is 82523139089. The reversal of 82523139078 is 87093132528.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82523139077) 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, 595650 + ... + 721002.

It is an arithmetic number, because the mean of its divisors is an integer number (10315568691).

Almost surely, 2^82523139078 is an apocalyptic number.

82523139078 is an abundant number, since it is smaller than the sum of its proper divisors (82525959978).

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

82523139078 is a wasteful number, since it uses less digits than its factorization.

82523139078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235079.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 82523139078 in words is "eighty-two billion, five hundred twenty-three million, one hundred thirty-nine thousand, seventy-eight".