84687040628892 has 144 divisors (see below), whose sum is σ = 236802855714880. Its totient is φ = 25349525351424.

The previous prime is 84687040628887. The next prime is 84687040628909. The reversal of 84687040628892 is 29882604078648.

84687040628892 is a `hidden beast` number, since 8 + 4 + 68 + 70 + 406 + 2 + 8 + 8 + 92 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 84687040628892.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 117267609 + ... + 117987567.

Almost surely, 2^{84687040628892} 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 84687040628892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118401427857440).

84687040628892 is an abundant number, since it is smaller than the sum of its proper divisors (152115815085988).

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

84687040628892 is a wasteful number, since it uses less digits than its factorization.

84687040628892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726812 (or 726807 counting only the distinct ones).

The product of its (nonzero) digits is 594542592, while the sum is 72.

The spelling of 84687040628892 in words is "eighty-four trillion, six hundred eighty-seven billion, forty million, six hundred twenty-eight thousand, eight hundred ninety-two".