51268608885 has 48 divisors (see below), whose sum is σ = 91491289344. Its totient is φ = 24369510144.

The previous prime is 51268608869. The next prime is 51268608887. The reversal of 51268608885 is 58880686215.

It is a happy number.

It is not a de Polignac number, because 51268608885 - 2⁴ = 51268608869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51268608887) 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, 7684 + ... + 320306.

It is an arithmetic number, because the mean of its divisors is an integer number (1906068528).

Almost surely, 2^51268608885 is an apocalyptic number.

It is an amenable number.

51268608885 is a deficient number, since it is larger than the sum of its proper divisors (40222680459).

51268608885 is a wasteful number, since it uses less digits than its factorization.

51268608885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312702 (or 312673 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 57.

The spelling of 51268608885 in words is "fifty-one billion, two hundred sixty-eight million, six hundred eight thousand, eight hundred eighty-five".