51311429264 has 20 divisors (see below), whose sum is σ = 99420021756. Its totient is φ = 25654649472.

The previous prime is 51311429263. The next prime is 51311429269. The reversal of 51311429264 is 46292411315.

It can be written as a sum of positive squares in 2 ways, for example, as 25634571664 + 25676857600 = 160108^2 + 160240^2 .

It is a super-2 number, since 2×51311429264² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (51311429263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454382 + ... + 555954.

Almost surely, 2^51311429264 is an apocalyptic number.

It is an amenable number.

51311429264 is a deficient number, since it is larger than the sum of its proper divisors (48108592492).

51311429264 is a wasteful number, since it uses less digits than its factorization.

51311429264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133154 (or 133148 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The spelling of 51311429264 in words is "fifty-one billion, three hundred eleven million, four hundred twenty-nine thousand, two hundred sixty-four".