6541237920 has 384 divisors, whose sum is σ = 25120972800. Its totient is φ = 1397440512.

The previous prime is 6541237919. The next prime is 6541237921. The reversal of 6541237920 is 297321456.

It is an interprime number because it is at equal distance from previous prime (6541237919) and next prime (6541237921).

It is not an unprimeable number, because it can be changed into a prime (6541237921) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5042712 + ... + 5044008.

It is an arithmetic number, because the mean of its divisors is an integer number (65419200).

Almost surely, 2^6541237920 is an apocalyptic number.

6541237920 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 6541237920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12560486400).

6541237920 is an abundant number, since it is smaller than the sum of its proper divisors (18579734880).

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

6541237920 is a wasteful number, since it uses less digits than its factorization.

6541237920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 6541237920 is about 80877.9198545561. The cubic root of 6541237920 is about 1870.1939535928.

The spelling of 6541237920 in words is "six billion, five hundred forty-one million, two hundred thirty-seven thousand, nine hundred twenty".