51331697743 has 2 divisors, whose sum is σ = 51331697744. Its totient is φ = 51331697742.

The previous prime is 51331697699. The next prime is 51331697803. The reversal of 51331697743 is 34779613315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51331697743 - 2¹³ = 51331689551 is a prime.

It is a super-2 number, since 2×51331697743² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51331677743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25665848871 + 25665848872.

It is an arithmetic number, because the mean of its divisors is an integer number (25665848872).

Almost surely, 2^51331697743 is an apocalyptic number.

51331697743 is a deficient number, since it is larger than the sum of its proper divisors (1).

51331697743 is an equidigital number, since it uses as much as digits as its factorization.

51331697743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 49.

The spelling of 51331697743 in words is "fifty-one billion, three hundred thirty-one million, six hundred ninety-seven thousand, seven hundred forty-three".