220510520145 has 12 divisors (see below), whose sum is σ = 382218234996. Its totient is φ = 117605610720.

The previous prime is 220510520123. The next prime is 220510520149. The reversal of 220510520145 is 541025015022.

220510520145 is a `hidden beast` number, since 2 + 2 + 0 + 510 + 5 + 2 + 0 + 145 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 133631189136 + 86879331009 = 365556^2 + 294753^2 .

It is not a de Polignac number, because 220510520145 - 2⁶ = 220510520081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220510520149) 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, 2450116846 + ... + 2450116935.

It is an arithmetic number, because the mean of its divisors is an integer number (31851519583).

Almost surely, 2^220510520145 is an apocalyptic number.

It is an amenable number.

220510520145 is a deficient number, since it is larger than the sum of its proper divisors (161707714851).

220510520145 is a wasteful number, since it uses less digits than its factorization.

220510520145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4900233792 (or 4900233789 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 220510520145 its reverse (541025015022), we get a palindrome (761535535167).

The spelling of 220510520145 in words is "two hundred twenty billion, five hundred ten million, five hundred twenty thousand, one hundred forty-five".