51071031543 has 8 divisors (see below), whose sum is σ = 77822524288. Its totient is φ = 29183446584.

The previous prime is 51071031509. The next prime is 51071031553. The reversal of 51071031543 is 34513017015.

51071031543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51071031543 - 2²⁰ = 51069982967 is a prime.

It is a super-2 number, since 2×51071031543² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51071031543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51071031553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1215976921 + ... + 1215976962.

It is an arithmetic number, because the mean of its divisors is an integer number (9727815536).

Almost surely, 2^51071031543 is an apocalyptic number.

51071031543 is a deficient number, since it is larger than the sum of its proper divisors (26751492745).

51071031543 is a wasteful number, since it uses less digits than its factorization.

51071031543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431953893.

The product of its (nonzero) digits is 6300, while the sum is 30.

Adding to 51071031543 its reverse (34513017015), we get a palindrome (85584048558).

The spelling of 51071031543 in words is "fifty-one billion, seventy-one million, thirty-one thousand, five hundred forty-three".