7221763231560 has 320 divisors, whose sum is σ = 25393716691200. Its totient is φ = 1837330159104.

The previous prime is 7221763231549. The next prime is 7221763231567. The reversal of 7221763231560 is 651323671227.

7221763231560 is a `hidden beast` number, since 7 + 2 + 2 + 1 + 7 + 63 + 23 + 1 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (7221763231567) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 28863717 + ... + 29112843.

It is an arithmetic number, because the mean of its divisors is an integer number (79355364660).

Almost surely, 2^{7221763231560} 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 7221763231560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12696858345600).

7221763231560 is an abundant number, since it is smaller than the sum of its proper divisors (18171953459640).

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

7221763231560 is a wasteful number, since it uses less digits than its factorization.

7221763231560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249562 (or 249549 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 7221763231560 in words is "seven trillion, two hundred twenty-one billion, seven hundred sixty-three million, two hundred thirty-one thousand, five hundred sixty".