84502686819 has 4 divisors (see below), whose sum is σ = 112670249096. Its totient is φ = 56335124544.

The previous prime is 84502686817. The next prime is 84502686857. The reversal of 84502686819 is 91868620548.

It is a happy number.

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

It is not a de Polignac number, because 84502686819 - 2¹ = 84502686817 is a prime.

It is a super-2 number, since 2×84502686819² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84502686817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14083781134 + ... + 14083781139.

It is an arithmetic number, because the mean of its divisors is an integer number (28167562274).

Almost surely, 2^84502686819 is an apocalyptic number.

84502686819 is a deficient number, since it is larger than the sum of its proper divisors (28167562277).

84502686819 is a wasteful number, since it uses less digits than its factorization.

84502686819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28167562276.

The product of its (nonzero) digits is 6635520, while the sum is 57.

The spelling of 84502686819 in words is "eighty-four billion, five hundred two million, six hundred eighty-six thousand, eight hundred nineteen".