51313472787 has 8 divisors (see below), whose sum is σ = 68448073104. Its totient is φ = 34193927168.

The previous prime is 51313472761. The next prime is 51313472839. The reversal of 51313472787 is 78727431315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51313472787 - 2⁶ = 51313472723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51313472087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3755718 + ... + 3769355.

It is an arithmetic number, because the mean of its divisors is an integer number (8556009138).

Almost surely, 2^51313472787 is an apocalyptic number.

51313472787 is a deficient number, since it is larger than the sum of its proper divisors (17134600317).

51313472787 is a wasteful number, since it uses less digits than its factorization.

51313472787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7527349.

The product of its digits is 987840, while the sum is 48.

The spelling of 51313472787 in words is "fifty-one billion, three hundred thirteen million, four hundred seventy-two thousand, seven hundred eighty-seven".