203056220660 has 12 divisors (see below), whose sum is σ = 426418063428. Its totient is φ = 81222488256.

The previous prime is 203056220611. The next prime is 203056220693. The reversal of 203056220660 is 66022650302.

It can be written as a sum of positive squares in 2 ways, for example, as 86138728036 + 116917492624 = 293494^2 + 341932^2 .

It is a super-2 number, since 2×203056220660² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5076405497 + ... + 5076405536.

It is an arithmetic number, because the mean of its divisors is an integer number (35534838619).

Almost surely, 2^203056220660 is an apocalyptic number.

203056220660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203056220660 is an abundant number, since it is smaller than the sum of its proper divisors (223361842768).

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

203056220660 is a wasteful number, since it uses less digits than its factorization.

203056220660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10152811042 (or 10152811040 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 203056220660 its reverse (66022650302), we get a palindrome (269078870962).

The spelling of 203056220660 in words is "two hundred three billion, fifty-six million, two hundred twenty thousand, six hundred sixty".