6720111552 has 504 divisors, whose sum is σ = 23616050304. Its totient is φ = 1649894400.

The previous prime is 6720111551. The next prime is 6720111553. The reversal of 6720111552 is 2551110276.

It is an interprime number because it is at equal distance from previous prime (6720111551) and next prime (6720111553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720111551) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 156281643 + ... + 156281685.

Almost surely, 2^6720111552 is an apocalyptic number.

6720111552 is a gapful number since it is divisible by the number (62) 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 6720111552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11808025152).

6720111552 is an abundant number, since it is smaller than the sum of its proper divisors (16895938752).

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

6720111552 is a wasteful number, since it uses less digits than its factorization.

6720111552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 6720111552 is about 81976.2865223840. The cubic root of 6720111552 is about 1887.0880338982.

The spelling of 6720111552 in words is "six billion, seven hundred twenty million, one hundred eleven thousand, five hundred fifty-two".