84033129728 has 36 divisors (see below), whose sum is σ = 175030974048. Its totient is φ = 40189754880.

The previous prime is 84033129721. The next prime is 84033129767. The reversal of 84033129728 is 82792133048.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84033129721) 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, 7130078 + ... + 7141853.

Almost surely, 2^84033129728 is an apocalyptic number.

It is an amenable number.

84033129728 is an abundant number, since it is smaller than the sum of its proper divisors (90997844320).

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

84033129728 is a wasteful number, since it uses less digits than its factorization.

84033129728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14271970 (or 14271956 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 84033129728 in words is "eighty-four billion, thirty-three million, one hundred twenty-nine thousand, seven hundred twenty-eight".