7421561364204 has 144 divisors (see below), whose sum is σ = 20273795942400. Its totient is φ = 2275575246720.

The previous prime is 7421561364157. The next prime is 7421561364241. The reversal of 7421561364204 is 4024631651247.

7421561364204 is a `hidden beast` number, since 7 + 4 + 2 + 1 + 5 + 613 + 6 + 4 + 20 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 7421561364204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 960467389 + ... + 960475115.

It is an arithmetic number, because the mean of its divisors is an integer number (140790249600).

Almost surely, 2^{7421561364204} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7421561364204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10136897971200).

7421561364204 is an abundant number, since it is smaller than the sum of its proper divisors (12852234578196).

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

7421561364204 is a wasteful number, since it uses less digits than its factorization.

7421561364204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14660 (or 14655 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 7421561364204 in words is "seven trillion, four hundred twenty-one billion, five hundred sixty-one million, three hundred sixty-four thousand, two hundred four".