220325644665 has 96 divisors (see below), whose sum is σ = 455799951360. Its totient is φ = 96263088768.

The previous prime is 220325644657. The next prime is 220325644681. The reversal of 220325644665 is 566446523022.

220325644665 is a `hidden beast` number, since 2 + 20 + 3 + 2 + 564 + 4 + 6 + 65 = 666.

It is not a de Polignac number, because 220325644665 - 2³ = 220325644657 is a prime.

It is a super-3 number, since 3×220325644665³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 220325644665.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9428566 + ... + 9451904.

It is an arithmetic number, because the mean of its divisors is an integer number (4747916160).

Almost surely, 2^220325644665 is an apocalyptic number.

It is an amenable number.

220325644665 is an abundant number, since it is smaller than the sum of its proper divisors (235474306695).

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

220325644665 is a wasteful number, since it uses less digits than its factorization.

220325644665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24683 (or 24680 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

The spelling of 220325644665 in words is "two hundred twenty billion, three hundred twenty-five million, six hundred forty-four thousand, six hundred sixty-five".