51344767511 has 4 divisors (see below), whose sum is σ = 51345236592. Its totient is φ = 51344298432.

The previous prime is 51344767501. The next prime is 51344767519. The reversal of 51344767511 is 11576744315.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51344767511 - 2¹⁴ = 51344751127 is a prime.

It is a super-2 number, since 2×51344767511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51344767519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26471 + ... + 321543.

It is an arithmetic number, because the mean of its divisors is an integer number (12836309148).

Almost surely, 2^51344767511 is an apocalyptic number.

51344767511 is a deficient number, since it is larger than the sum of its proper divisors (469081).

51344767511 is a wasteful number, since it uses less digits than its factorization.

51344767511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469080.

The product of its digits is 352800, while the sum is 44.

The spelling of 51344767511 in words is "fifty-one billion, three hundred forty-four million, seven hundred sixty-seven thousand, five hundred eleven".