52766516565221 has 8 divisors (see below), whose sum is σ = 53304988519488. Its totient is φ = 52230531780000.

The previous prime is 52766516565199. The next prime is 52766516565241. The reversal of 52766516565221 is 12256561566725.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52766516565221 - 2³⁴ = 52749336696037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52766516565241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621749615 + ... + 621834476.

It is an arithmetic number, because the mean of its divisors is an integer number (6663123564936).

Almost surely, 2^{52766516565221} is an apocalyptic number.

It is an amenable number.

52766516565221 is a deficient number, since it is larger than the sum of its proper divisors (538471954267).

52766516565221 is a wasteful number, since it uses less digits than its factorization.

52766516565221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243584523.

The product of its digits is 45360000, while the sum is 59.

The spelling of 52766516565221 in words is "fifty-two trillion, seven hundred sixty-six billion, five hundred sixteen million, five hundred sixty-five thousand, two hundred twenty-one".