6541211730 has 128 divisors (see below), whose sum is σ = 17079828480. Its totient is φ = 1598446080.

The previous prime is 6541211687. The next prime is 6541211749. The reversal of 6541211730 is 371121456.

6541211730 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2201686 + ... + 2204654.

It is an arithmetic number, because the mean of its divisors is an integer number (133436160).

Almost surely, 2^6541211730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6541211730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8539914240).

6541211730 is an abundant number, since it is smaller than the sum of its proper divisors (10538616750).

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

6541211730 is a wasteful number, since it uses less digits than its factorization.

6541211730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 6541211730 is about 80877.7579437017. The cubic root of 6541211730 is about 1870.1914576103.

The spelling of 6541211730 in words is "six billion, five hundred forty-one million, two hundred eleven thousand, seven hundred thirty".