4221781702380 has 288 divisors, whose sum is σ = 14994678823488. Its totient is φ = 950062694400.

The previous prime is 4221781702367. The next prime is 4221781702423. The reversal of 4221781702380 is 832071871224.

4221781702380 is a `hidden beast` number, since 42 + 217 + 8 + 17 + 0 + 2 + 380 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 1598110 + ... + 3316250.

It is an arithmetic number, because the mean of its divisors is an integer number (52064857026).

Almost surely, 2^{4221781702380} 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 4221781702380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7497339411744).

4221781702380 is an abundant number, since it is smaller than the sum of its proper divisors (10772897121108).

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

4221781702380 is a wasteful number, since it uses less digits than its factorization.

4221781702380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718257 (or 1718252 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 4221781702380 in words is "four trillion, two hundred twenty-one billion, seven hundred eighty-one million, seven hundred two thousand, three hundred eighty".