82704244117478 has 4 divisors (see below), whose sum is σ = 124056366176220. Its totient is φ = 41352122058738.

The previous prime is 82704244117471. The next prime is 82704244117489. The reversal of 82704244117478 is 87471144240728.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82704244117471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20676061029368 + ... + 20676061029371.

It is an arithmetic number, because the mean of its divisors is an integer number (31014091544055).

Almost surely, 2^{82704244117478} is an apocalyptic number.

82704244117478 is a deficient number, since it is larger than the sum of its proper divisors (41352122058742).

82704244117478 is a wasteful number, since it uses less digits than its factorization.

82704244117478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41352122058741.

The product of its (nonzero) digits is 22478848, while the sum is 59.

The spelling of 82704244117478 in words is "eighty-two trillion, seven hundred four billion, two hundred forty-four million, one hundred seventeen thousand, four hundred seventy-eight".