51900324849 has 24 divisors (see below), whose sum is σ = 78288138240. Its totient is φ = 33069814272.

The previous prime is 51900324829. The next prime is 51900324859. The reversal of 51900324849 is 94842300915.

51900324849 is a `hidden beast` number, since 51 + 90 + 0 + 32 + 484 + 9 = 666.

It is not a de Polignac number, because 51900324849 - 2⁹ = 51900324337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51900324829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166737 + ... + 362769.

It is an arithmetic number, because the mean of its divisors is an integer number (3262005760).

Almost surely, 2^51900324849 is an apocalyptic number.

It is an amenable number.

51900324849 is a deficient number, since it is larger than the sum of its proper divisors (26387813391).

51900324849 is a wasteful number, since it uses less digits than its factorization.

51900324849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197341 (or 197338 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 51900324849 in words is "fifty-one billion, nine hundred million, three hundred twenty-four thousand, eight hundred forty-nine".