84239770522 has 4 divisors (see below), whose sum is σ = 126359655786. Its totient is φ = 42119885260.

The previous prime is 84239770513. The next prime is 84239770577. The reversal of 84239770522 is 22507793248.

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

It can be written as a sum of positive squares in only one way, i.e., 66553164441 + 17686606081 = 257979^2 + 132991^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21059942629 + ... + 21059942632.

Almost surely, 2^84239770522 is an apocalyptic number.

84239770522 is a deficient number, since it is larger than the sum of its proper divisors (42119885264).

84239770522 is a wasteful number, since it uses less digits than its factorization.

84239770522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42119885263.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 84239770522 in words is "eighty-four billion, two hundred thirty-nine million, seven hundred seventy thousand, five hundred twenty-two".