6381988572 has 48 divisors (see below), whose sum is σ = 15545617920. Its totient is φ = 2033938368.

The previous prime is 6381988541. The next prime is 6381988621. The reversal of 6381988572 is 2758891836.

It is a happy number.

Its product of digits (5806080) is a multiple of the sum of its prime divisors (10240).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 931953 + ... + 938775.

It is an arithmetic number, because the mean of its divisors is an integer number (323867040).

Almost surely, 2^6381988572 is an apocalyptic number.

It is an amenable number.

6381988572 is an abundant number, since it is smaller than the sum of its proper divisors (9163629348).

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

6381988572 is a wasteful number, since it uses less digits than its factorization.

6381988572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10242 (or 10240 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 57.

The square root of 6381988572 is about 79887.3492613192. The cubic root of 6381988572 is about 1854.8921961069.

The spelling of 6381988572 in words is "six billion, three hundred eighty-one million, nine hundred eighty-eight thousand, five hundred seventy-two".