20566455202 has 8 divisors (see below), whose sum is σ = 30908896812. Its totient is φ = 10263489600.

The previous prime is 20566455197. The next prime is 20566455223. The reversal of 20566455202 is 20255466502.

It can be written as a sum of positive squares in 2 ways, for example, as 19257390441 + 1309064761 = 138771^2 + 36181^2 .

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

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, 9867699 + ... + 9869782.

Almost surely, 2^20566455202 is an apocalyptic number.

20566455202 is a deficient number, since it is larger than the sum of its proper divisors (10342441610).

20566455202 is a wasteful number, since it uses less digits than its factorization.

20566455202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19738004.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 20566455202 in words is "twenty billion, five hundred sixty-six million, four hundred fifty-five thousand, two hundred two".