20610636245 has 16 divisors (see below), whose sum is σ = 25388149248. Its totient is φ = 16053240960.

The previous prime is 20610636229. The next prime is 20610636253. The reversal of 20610636245 is 54263601602.

It is a happy number.

It is not a de Polignac number, because 20610636245 - 2⁴ = 20610636229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3389 + ... + 203058.

It is an arithmetic number, because the mean of its divisors is an integer number (1586759328).

Almost surely, 2^20610636245 is an apocalyptic number.

It is an amenable number.

20610636245 is a deficient number, since it is larger than the sum of its proper divisors (4777513003).

20610636245 is a wasteful number, since it uses less digits than its factorization.

20610636245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206980.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 20610636245 in words is "twenty billion, six hundred ten million, six hundred thirty-six thousand, two hundred forty-five".