51688432037 has 16 divisors (see below), whose sum is σ = 57715468800. Its totient is φ = 45883378800.

The previous prime is 51688431979. The next prime is 51688432057. The reversal of 51688432037 is 73023488615.

It is a cyclic number.

It is not a de Polignac number, because 51688432037 - 2¹⁶ = 51688366501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51688431982 and 51688432000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51688432057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1845464 + ... + 1873262.

It is an arithmetic number, because the mean of its divisors is an integer number (3607216800).

Almost surely, 2^51688432037 is an apocalyptic number.

It is an amenable number.

51688432037 is a deficient number, since it is larger than the sum of its proper divisors (6027036763).

51688432037 is a wasteful number, since it uses less digits than its factorization.

51688432037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31784.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 51688432037 in words is "fifty-one billion, six hundred eighty-eight million, four hundred thirty-two thousand, thirty-seven".