52218366718520 has 16 divisors (see below), whose sum is σ = 117491325116760. Its totient is φ = 20887346687392.

The previous prime is 52218366718489. The next prime is 52218366718559. The reversal of 52218366718520 is 2581766381225.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652729583942 + ... + 652729584021.

Almost surely, 2^{52218366718520} is an apocalyptic number.

It is an amenable number.

52218366718520 is an abundant number, since it is smaller than the sum of its proper divisors (65272958398240).

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

52218366718520 is a wasteful number, since it uses less digits than its factorization.

52218366718520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305459167974 (or 1305459167970 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 52218366718520 in words is "fifty-two trillion, two hundred eighteen billion, three hundred sixty-six million, seven hundred eighteen thousand, five hundred twenty".