84538019536 has 20 divisors (see below), whose sum is σ = 163997948772. Its totient is φ = 42215968256.

The previous prime is 84538019437. The next prime is 84538019537. The reversal of 84538019536 is 63591083548.

It can be written as a sum of positive squares in 2 ways, for example, as 53849987136 + 30688032400 = 232056^2 + 175180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84538019537) 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, 3301945 + ... + 3327448.

Almost surely, 2^84538019536 is an apocalyptic number.

It is an amenable number.

84538019536 is a deficient number, since it is larger than the sum of its proper divisors (79459929236).

84538019536 is a wasteful number, since it uses less digits than its factorization.

84538019536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6630198 (or 6630192 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 84538019536 in words is "eighty-four billion, five hundred thirty-eight million, nineteen thousand, five hundred thirty-six".