51263443671 has 16 divisors (see below), whose sum is σ = 77806967040. Its totient is φ = 29717937920.

The previous prime is 51263443619. The next prime is 51263443727. The reversal of 51263443671 is 17634436215.

It is not a de Polignac number, because 51263443671 - 2¹⁰ = 51263442647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51263443471) 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, 33769626 + ... + 33771143.

It is an arithmetic number, because the mean of its divisors is an integer number (4862935440).

Almost surely, 2^51263443671 is an apocalyptic number.

51263443671 is a deficient number, since it is larger than the sum of its proper divisors (26543523369).

51263443671 is a wasteful number, since it uses less digits than its factorization.

51263443671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67540806.

The product of its digits is 362880, while the sum is 42.

Adding to 51263443671 its reverse (17634436215), we get a palindrome (68897879886).

The spelling of 51263443671 in words is "fifty-one billion, two hundred sixty-three million, four hundred forty-three thousand, six hundred seventy-one".