6639473277360 has 1920 divisors, whose sum is σ = 30097982177280. Its totient is φ = 1329389107200.

The previous prime is 6639473277337. The next prime is 6639473277383. The reversal of 6639473277360 is 637723749366.

It is a happy number.

6639473277360 is a `hidden beast` number, since 6 + 6 + 39 + 473 + 2 + 7 + 73 + 60 = 666.

It is an interprime number because it is at equal distance from previous prime (6639473277337) and next prime (6639473277383).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 3666190855 + ... + 3666192665.

It is an arithmetic number, because the mean of its divisors is an integer number (15676032384).

Almost surely, 2^{6639473277360} is an apocalyptic number.

6639473277360 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 6639473277360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15048991088640).

6639473277360 is an abundant number, since it is smaller than the sum of its proper divisors (23458508899920).

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

6639473277360 is a wasteful number, since it uses less digits than its factorization.

6639473277360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1953 counting only the distinct ones).

The product of its (nonzero) digits is 144027072, while the sum is 63.

The spelling of 6639473277360 in words is "six trillion, six hundred thirty-nine billion, four hundred seventy-three million, two hundred seventy-seven thousand, three hundred sixty".