21060049442320 has 320 divisors, whose sum is σ = 57903170817024. Its totient is φ = 6974843166720.

The previous prime is 21060049442293. The next prime is 21060049442389. The reversal of 21060049442320 is 2324494006012.

It is a self number, because there is not a number n which added to its sum of digits gives 21060049442320.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 528848010 + ... + 528887830.

Almost surely, 2^{21060049442320} is an apocalyptic number.

21060049442320 is a gapful number since it is divisible by the number (20) 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 21060049442320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28951585408512).

21060049442320 is an abundant number, since it is smaller than the sum of its proper divisors (36843121374704).

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

21060049442320 is a wasteful number, since it uses less digits than its factorization.

21060049442320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40170 (or 40164 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 21060049442320 in words is "twenty-one trillion, sixty billion, forty-nine million, four hundred forty-two thousand, three hundred twenty".