220775212652555 has 16 divisors (see below), whose sum is σ = 304226130355200. Its totient is φ = 152113065176160.

The previous prime is 220775212652537. The next prime is 220775212652581. The reversal of 220775212652555 is 555256212577022.

It is a happy number.

It is not a de Polignac number, because 220775212652555 - 2²⁶ = 220775145543691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220775212652555.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105634071995 + ... + 105634074084.

It is an arithmetic number, because the mean of its divisors is an integer number (19014133147200).

Almost surely, 2^{220775212652555} is an apocalyptic number.

220775212652555 is a deficient number, since it is larger than the sum of its proper divisors (83450917702645).

220775212652555 is a wasteful number, since it uses less digits than its factorization.

220775212652555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211268146114.

The product of its (nonzero) digits is 29400000, while the sum is 56.

The spelling of 220775212652555 in words is "two hundred twenty trillion, seven hundred seventy-five billion, two hundred twelve million, six hundred fifty-two thousand, five hundred fifty-five".