84135538365136 has 80 divisors (see below), whose sum is σ = 176245435244800. Its totient is φ = 38773119066624.

The previous prime is 84135538365133. The next prime is 84135538365163. The reversal of 84135538365136 is 63156383553148.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84135538365133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129060610 + ... + 129710878.

It is an arithmetic number, because the mean of its divisors is an integer number (2203067940560).

Almost surely, 2^{84135538365136} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84135538365136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88122717622400).

84135538365136 is an abundant number, since it is smaller than the sum of its proper divisors (92109896879664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84135538365136 is a wasteful number, since it uses less digits than its factorization.

84135538365136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661836 (or 661830 counting only the distinct ones).

The product of its digits is 93312000, while the sum is 61.

The spelling of 84135538365136 in words is "eighty-four trillion, one hundred thirty-five billion, five hundred thirty-eight million, three hundred sixty-five thousand, one hundred thirty-six".