20878222489152 has 672 divisors, whose sum is σ = 68705888739840. Its totient is φ = 5559484170240.

The previous prime is 20878222489121. The next prime is 20878222489213. The reversal of 20878222489152 is 25198422287802.

It is a tau number, because it is divible by the number of its divisors (672).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14309952999 + ... + 14309954457.

Almost surely, 2^{20878222489152} 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 20878222489152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34352944369920).

20878222489152 is an abundant number, since it is smaller than the sum of its proper divisors (47827666250688).

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

20878222489152 is a wasteful number, since it uses less digits than its factorization.

20878222489152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319 (or 2302 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 60.

The spelling of 20878222489152 in words is "twenty trillion, eight hundred seventy-eight billion, two hundred twenty-two million, four hundred eighty-nine thousand, one hundred fifty-two".