7421561364206 has 24 divisors (see below), whose sum is σ = 12467251008072. Its totient is φ = 3309787223600.

The previous prime is 7421561364157. The next prime is 7421561364241. The reversal of 7421561364206 is 6024631651247.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 289304240 + ... + 289329891.

It is an arithmetic number, because the mean of its divisors is an integer number (519468792003).

Almost surely, 2^{7421561364206} is an apocalyptic number.

7421561364206 is a deficient number, since it is larger than the sum of its proper divisors (5045689643866).

7421561364206 is a wasteful number, since it uses less digits than its factorization.

7421561364206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578634208 (or 578634197 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 7421561364206 in words is "seven trillion, four hundred twenty-one billion, five hundred sixty-one million, three hundred sixty-four thousand, two hundred six".