5221201511656 has 32 divisors (see below), whose sum is σ = 10636109978760. Its totient is φ = 2388459773952.

The previous prime is 5221201511569. The next prime is 5221201511663. The reversal of 5221201511656 is 6561151021225.

It can be written as a sum of positive squares in 4 ways, for example, as 3209723064900 + 2011478446756 = 1791570^2 + 1418266^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222129225 + ... + 222152728.

Almost surely, 2^{5221201511656} is an apocalyptic number.

It is an amenable number.

5221201511656 is an abundant number, since it is smaller than the sum of its proper divisors (5414908467104).

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

5221201511656 is a wasteful number, since it uses less digits than its factorization.

5221201511656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444282085 (or 444282081 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 37.

The spelling of 5221201511656 in words is "five trillion, two hundred twenty-one billion, two hundred one million, five hundred eleven thousand, six hundred fifty-six".