6921132450 has 24 divisors (see below), whose sum is σ = 17164408848. Its totient is φ = 1845635280.

The previous prime is 6921132389. The next prime is 6921132479. The reversal of 6921132450 is 542311296.

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 23070292 + ... + 23070591.

It is an arithmetic number, because the mean of its divisors is an integer number (715183702).

Almost surely, 2^6921132450 is an apocalyptic number.

6921132450 is an abundant number, since it is smaller than the sum of its proper divisors (10243276398).

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

6921132450 is a wasteful number, since it uses less digits than its factorization.

6921132450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46140898 (or 46140893 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 6921132450 is about 83193.3437842235. The cubic root of 6921132450 is about 1905.7198318515.

The spelling of 6921132450 in words is "six billion, nine hundred twenty-one million, one hundred thirty-two thousand, four hundred fifty".