82758584678457 has 4 divisors (see below), whose sum is σ = 110344779571280. Its totient is φ = 55172389785636.

The previous prime is 82758584678411. The next prime is 82758584678477. The reversal of 82758584678457 is 75487648585728.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-82758584678457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82758584678457.

It is not an unprimeable number, because it can be changed into a prime (82758584678477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13793097446407 + ... + 13793097446412.

It is an arithmetic number, because the mean of its divisors is an integer number (27586194892820).

Almost surely, 2^{82758584678457} is an apocalyptic number.

It is an amenable number.

82758584678457 is a deficient number, since it is larger than the sum of its proper divisors (27586194892823).

82758584678457 is a wasteful number, since it uses less digits than its factorization.

82758584678457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27586194892822.

The product of its digits is 33718272000, while the sum is 84.

The spelling of 82758584678457 in words is "eighty-two trillion, seven hundred fifty-eight billion, five hundred eighty-four million, six hundred seventy-eight thousand, four hundred fifty-seven".