147221551993776 has 320 divisors, whose sum is σ = 413204833198080. Its totient is φ = 44899803463680.

The previous prime is 147221551993759. The next prime is 147221551993981. The reversal of 147221551993776 is 677399155122741.

It is a self number, because there is not a number n which added to its sum of digits gives 147221551993776.

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 63 ways as a sum of consecutive naturals, for example, 64769709376 + ... + 64769711648.

It is an arithmetic number, because the mean of its divisors is an integer number (1291265103744).

Almost surely, 2^{147221551993776} is an apocalyptic number.

147221551993776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 147221551993776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206602416599040).

147221551993776 is an abundant number, since it is smaller than the sum of its proper divisors (265983281204304).

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

147221551993776 is a wasteful number, since it uses less digits than its factorization.

147221551993776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4204 (or 4198 counting only the distinct ones).

The product of its digits is 200037600, while the sum is 69.

The spelling of 147221551993776 in words is "one hundred forty-seven trillion, two hundred twenty-one billion, five hundred fifty-one million, nine hundred ninety-three thousand, seven hundred seventy-six".