20205355245 has 32 divisors (see below), whose sum is σ = 32834253312. Its totient is φ = 10608551232.

The previous prime is 20205355213. The next prime is 20205355273. The reversal of 20205355245 is 54255350202.

It is not a de Polignac number, because 20205355245 - 2⁵ = 20205355213 is a prime.

It is a super-3 number, since 3×20205355245³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323662 + ... + 381008.

It is an arithmetic number, because the mean of its divisors is an integer number (1026070416).

Almost surely, 2^20205355245 is an apocalyptic number.

It is an amenable number.

20205355245 is a deficient number, since it is larger than the sum of its proper divisors (12628898067).

20205355245 is a wasteful number, since it uses less digits than its factorization.

20205355245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57721.

The product of its (nonzero) digits is 60000, while the sum is 33.

The spelling of 20205355245 in words is "twenty billion, two hundred five million, three hundred fifty-five thousand, two hundred forty-five".