220865507073 has 12 divisors (see below), whose sum is σ = 327650332308. Its totient is φ = 143264112480.

The previous prime is 220865507069. The next prime is 220865507131. The reversal of 220865507073 is 370705568022.

220865507073 is a `hidden beast` number, since 2 + 20 + 8 + 6 + 550 + 7 + 0 + 73 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 79652643984 + 141212863089 = 282228^2 + 375783^2 .

It is not a de Polignac number, because 220865507073 - 2² = 220865507069 is a prime.

It is a super-2 number, since 2×220865507073² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220865507003) 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, 331629558 + ... + 331630223.

It is an arithmetic number, because the mean of its divisors is an integer number (27304194359).

Almost surely, 2^220865507073 is an apocalyptic number.

It is an amenable number.

220865507073 is a deficient number, since it is larger than the sum of its proper divisors (106784825235).

220865507073 is a wasteful number, since it uses less digits than its factorization.

220865507073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663259824 (or 663259821 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 220865507073 in words is "two hundred twenty billion, eight hundred sixty-five million, five hundred seven thousand, seventy-three".