84354221688 has 96 divisors (see below), whose sum is σ = 241878268800. Its totient is φ = 24450479680.

The previous prime is 84354221687. The next prime is 84354221719. The reversal of 84354221688 is 88612245348.

It is a self number, because there is not a number n which added to its sum of digits gives 84354221688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84354221683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 564678 + ... + 698261.

It is an arithmetic number, because the mean of its divisors is an integer number (2519565300).

Almost surely, 2^84354221688 is an apocalyptic number.

84354221688 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

84354221688 is an abundant number, since it is smaller than the sum of its proper divisors (157524047112).

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

84354221688 is a wasteful number, since it uses less digits than its factorization.

84354221688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262993 (or 1262978 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 51.

The spelling of 84354221688 in words is "eighty-four billion, three hundred fifty-four million, two hundred twenty-one thousand, six hundred eighty-eight".