2063561817 has 48 divisors (see below), whose sum is σ = 2989703808. Its totient is φ = 1264919040.

The previous prime is 2063561809. The next prime is 2063561833. The reversal of 2063561817 is 7181653602.

It is not a de Polignac number, because 2063561817 - 2³ = 2063561809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2063561897) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6635092 + ... + 6635402.

It is an arithmetic number, because the mean of its divisors is an integer number (62285496).

Almost surely, 2^2063561817 is an apocalyptic number.

It is an amenable number.

2063561817 is a deficient number, since it is larger than the sum of its proper divisors (926141991).

2063561817 is a wasteful number, since it uses less digits than its factorization.

2063561817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 2063561817 is about 45426.4440276806. Note that the first 3 decimals coincide. The cubic root of 2063561817 is about 1273.1292450807.

The spelling of 2063561817 in words is "two billion, sixty-three million, five hundred sixty-one thousand, eight hundred seventeen".