51765143039 has 16 divisors (see below), whose sum is σ = 54465384960. Its totient is φ = 49103171040.

The previous prime is 51765143033. The next prime is 51765143107. The reversal of 51765143039 is 93034156715.

It is a de Polignac number, because none of the positive numbers 2^k-51765143039 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 (51765143033) 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, 2999774 + ... + 3016980.

It is an arithmetic number, because the mean of its divisors is an integer number (3404086560).

Almost surely, 2^51765143039 is an apocalyptic number.

51765143039 is a deficient number, since it is larger than the sum of its proper divisors (2700241921).

51765143039 is a wasteful number, since it uses less digits than its factorization.

51765143039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18310.

The product of its (nonzero) digits is 340200, while the sum is 44.

The spelling of 51765143039 in words is "fifty-one billion, seven hundred sixty-five million, one hundred forty-three thousand, thirty-nine".