84054834840 has 128 divisors (see below), whose sum is σ = 257092056000. Its totient is φ = 21977180160.

The previous prime is 84054834821. The next prime is 84054834859. The reversal of 84054834840 is 4843845048.

It is an interprime number because it is at equal distance from previous prime (84054834821) and next prime (84054834859).

It is a self number, because there is not a number n which added to its sum of digits gives 84054834840.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12392250 + ... + 12399030.

Almost surely, 2^84054834840 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 84054834840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128546028000).

84054834840 is an abundant number, since it is smaller than the sum of its proper divisors (173037221160).

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

84054834840 is a wasteful number, since it uses less digits than its factorization.

84054834840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8797 (or 8793 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 48.

The spelling of 84054834840 in words is "eighty-four billion, fifty-four million, eight hundred thirty-four thousand, eight hundred forty".