6521114140 has 24 divisors (see below), whose sum is σ = 13745259360. Its totient is φ = 2598746688.

The previous prime is 6521114129. The next prime is 6521114147. The reversal of 6521114140 is 414111256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6521114147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600672 + ... + 611431.

It is an arithmetic number, because the mean of its divisors is an integer number (572719140).

Almost surely, 2^6521114140 is an apocalyptic number.

It is an amenable number.

6521114140 is an abundant number, since it is smaller than the sum of its proper divisors (7224145220).

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

6521114140 is a wasteful number, since it uses less digits than its factorization.

6521114140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212381 (or 1212379 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 6521114140 is about 80753.4156553145. The cubic root of 6521114140 is about 1868.2741318575.

Adding to 6521114140 its reverse (414111256), we get a palindrome (6935225396).

The spelling of 6521114140 in words is "six billion, five hundred twenty-one million, one hundred fourteen thousand, one hundred forty".