51603867249 has 32 divisors (see below), whose sum is σ = 77776478208. Its totient is φ = 30150960000.

The previous prime is 51603867241. The next prime is 51603867397. The reversal of 51603867249 is 94276830615.

It is not a de Polignac number, because 51603867249 - 2³ = 51603867241 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51603867241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173149 + ... + 364949.

It is an arithmetic number, because the mean of its divisors is an integer number (2430514944).

It is a 1-persistent number, because it is pandigital, but 2⋅51603867249 = 103207734498 is not.

Almost surely, 2^51603867249 is an apocalyptic number.

It is an amenable number.

51603867249 is a deficient number, since it is larger than the sum of its proper divisors (26172610959).

51603867249 is a wasteful number, since it uses less digits than its factorization.

51603867249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192109.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 51603867249 in words is "fifty-one billion, six hundred three million, eight hundred sixty-seven thousand, two hundred forty-nine".