20485185355 has 8 divisors (see below), whose sum is σ = 24588521712. Its totient is φ = 16383948768.

The previous prime is 20485185353. The next prime is 20485185421. The reversal of 20485185355 is 55358158402.

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 20485185355 - 2¹ = 20485185353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20485185353) 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, 503397 + ... + 542566.

It is an arithmetic number, because the mean of its divisors is an integer number (3073565214).

Almost surely, 2^20485185355 is an apocalyptic number.

20485185355 is a deficient number, since it is larger than the sum of its proper divisors (4103336357).

20485185355 is a wasteful number, since it uses less digits than its factorization.

20485185355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049885.

The product of its (nonzero) digits is 960000, while the sum is 46.

The spelling of 20485185355 in words is "twenty billion, four hundred eighty-five million, one hundred eighty-five thousand, three hundred fifty-five".