51549230511 has 6 divisors (see below), whose sum is σ = 74459999640. Its totient is φ = 34366153668.

The previous prime is 51549230507. The next prime is 51549230527. The reversal of 51549230511 is 11503294515.

It is a happy number.

51549230511 is a `hidden beast` number, since 5 + 1 + 54 + 92 + 3 + 0 + 511 = 666.

It is not a de Polignac number, because 51549230511 - 2² = 51549230507 is a prime.

It is a super-2 number, since 2×51549230511² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51549234511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2863846131 + ... + 2863846148.

It is an arithmetic number, because the mean of its divisors is an integer number (12409999940).

Almost surely, 2^51549230511 is an apocalyptic number.

51549230511 is a deficient number, since it is larger than the sum of its proper divisors (22910769129).

51549230511 is a wasteful number, since it uses less digits than its factorization.

51549230511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5727692285 (or 5727692282 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 51549230511 in words is "fifty-one billion, five hundred forty-nine million, two hundred thirty thousand, five hundred eleven".