51812025522291 has 16 divisors (see below), whose sum is σ = 76990455304320. Its totient is φ = 34436995809480.

The previous prime is 51812025522241. The next prime is 51812025522331. The reversal of 51812025522291 is 19222552021815.

51812025522291 is a `hidden beast` number, since 5 + 1 + 8 + 1 + 2 + 0 + 2 + 552 + 2 + 2 + 91 = 666.

It is not a de Polignac number, because 51812025522291 - 2⁷ = 51812025522163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51812025522241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2898728085 + ... + 2898745958.

It is an arithmetic number, because the mean of its divisors is an integer number (4811903456520).

Almost surely, 2^{51812025522291} is an apocalyptic number.

51812025522291 is a deficient number, since it is larger than the sum of its proper divisors (25178429782029).

51812025522291 is a wasteful number, since it uses less digits than its factorization.

51812025522291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5797474383 (or 5797474377 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 45.

The spelling of 51812025522291 in words is "fifty-one trillion, eight hundred twelve billion, twenty-five million, five hundred twenty-two thousand, two hundred ninety-one".