6423210647280 has 800 divisors, whose sum is σ = 26470275258240. Its totient is φ = 1412410245120.

The previous prime is 6423210647267. The next prime is 6423210647311. The reversal of 6423210647280 is 827460123246.

It is a happy number.

6423210647280 is a `hidden beast` number, since 6 + 4 + 2 + 321 + 0 + 6 + 47 + 280 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 369629952 + ... + 369647328.

Almost surely, 2^{6423210647280} is an apocalyptic number.

6423210647280 is a gapful number since it is divisible by the number (60) 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 6423210647280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13235137629120).

6423210647280 is an abundant number, since it is smaller than the sum of its proper divisors (20047064610960).

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

6423210647280 is a wasteful number, since it uses less digits than its factorization.

6423210647280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17719 (or 17704 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 6423210647280 in words is "six trillion, four hundred twenty-three billion, two hundred ten million, six hundred forty-seven thousand, two hundred eighty".