6399678430572 has 48 divisors (see below), whose sum is σ = 17320522732800. Its totient is φ = 1801188810432.

The previous prime is 6399678430571. The next prime is 6399678430627. The reversal of 6399678430572 is 2750348769936.

It is a junction number, because it is equal to n+sod(n) for n = 6399678430497 and 6399678430506.

It is not an unprimeable number, because it can be changed into a prime (6399678430571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 568551447 + ... + 568562702.

It is an arithmetic number, because the mean of its divisors is an integer number (360844223600).

Almost surely, 2^{6399678430572} is an apocalyptic number.

It is an amenable number.

6399678430572 is an abundant number, since it is smaller than the sum of its proper divisors (10920844302228).

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

6399678430572 is a wasteful number, since it uses less digits than its factorization.

6399678430572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137114230 (or 1137114228 counting only the distinct ones).

The product of its (nonzero) digits is 411505920, while the sum is 69.

The spelling of 6399678430572 in words is "six trillion, three hundred ninety-nine billion, six hundred seventy-eight million, four hundred thirty thousand, five hundred seventy-two".