84546420012 has 36 divisors (see below), whose sum is σ = 213826452840. Its totient is φ = 28167385152.

The previous prime is 84546420011. The next prime is 84546420017. The reversal of 84546420012 is 21002464548.

84546420012 is a `hidden beast` number, since 8 + 4 + 5 + 4 + 642 + 0 + 0 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (84546420011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 544962 + ... + 682697.

It is an arithmetic number, because the mean of its divisors is an integer number (5939623690).

Almost surely, 2^84546420012 is an apocalyptic number.

It is an amenable number.

84546420012 is an abundant number, since it is smaller than the sum of its proper divisors (129280032828).

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

84546420012 is a wasteful number, since it uses less digits than its factorization.

84546420012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229582 (or 1229577 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 84546420012 in words is "eighty-four billion, five hundred forty-six million, four hundred twenty thousand, twelve".