205220640603 has 8 divisors (see below), whose sum is σ = 298502750016. Its totient is φ = 124376145800.

The previous prime is 205220640589. The next prime is 205220640643. The reversal of 205220640603 is 306046022502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205220640603 - 2⁴ = 205220640587 is a prime.

It is a super-2 number, since 2×205220640603² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205220640643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3109403613 + ... + 3109403678.

It is an arithmetic number, because the mean of its divisors is an integer number (37312843752).

Almost surely, 2^205220640603 is an apocalyptic number.

205220640603 is a deficient number, since it is larger than the sum of its proper divisors (93282109413).

205220640603 is a wasteful number, since it uses less digits than its factorization.

205220640603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6218807305.

The product of its (nonzero) digits is 17280, while the sum is 30.

The spelling of 205220640603 in words is "two hundred five billion, two hundred twenty million, six hundred forty thousand, six hundred three".