52216663457 has 12 divisors (see below), whose sum is σ = 60779582676. Its totient is φ = 44729324640.

The previous prime is 52216663453. The next prime is 52216663483. The reversal of 52216663457 is 75436661225.

It can be written as a sum of positive squares in 2 ways, for example, as 41959835281 + 10256828176 = 204841^2 + 101276^2 .

It is not a de Polignac number, because 52216663457 - 2² = 52216663453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52216663453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251294 + ... + 409367.

It is an arithmetic number, because the mean of its divisors is an integer number (5064965223).

Almost surely, 2^52216663457 is an apocalyptic number.

It is an amenable number.

52216663457 is a deficient number, since it is larger than the sum of its proper divisors (8562919219).

52216663457 is a wasteful number, since it uses less digits than its factorization.

52216663457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662288 (or 662281 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 47.

The spelling of 52216663457 in words is "fifty-two billion, two hundred sixteen million, six hundred sixty-three thousand, four hundred fifty-seven".