51754057687 has 8 divisors (see below), whose sum is σ = 54597172400. Its totient is φ = 48922864704.

The previous prime is 51754057669. The next prime is 51754057697. The reversal of 51754057687 is 78675045715.

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

It is a de Polignac number, because none of the positive numbers 2^k-51754057687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51754057697) 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, 2971512 + ... + 2988877.

It is an arithmetic number, because the mean of its divisors is an integer number (6824646550).

Almost surely, 2^51754057687 is an apocalyptic number.

51754057687 is a deficient number, since it is larger than the sum of its proper divisors (2843114713).

51754057687 is a wasteful number, since it uses less digits than its factorization.

51754057687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5960865.

The product of its (nonzero) digits is 8232000, while the sum is 55.

The spelling of 51754057687 in words is "fifty-one billion, seven hundred fifty-four million, fifty-seven thousand, six hundred eighty-seven".