51344536605 has 32 divisors (see below), whose sum is σ = 83170209024. Its totient is φ = 27046196736.

The previous prime is 51344536571. The next prime is 51344536631. The reversal of 51344536605 is 50663544315.

It is not a de Polignac number, because 51344536605 - 2¹⁴ = 51344520221 is a prime.

It is a super-2 number, since 2×51344536605² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328009 + ... + 458561.

It is an arithmetic number, because the mean of its divisors is an integer number (2599069032).

Almost surely, 2^51344536605 is an apocalyptic number.

It is an amenable number.

51344536605 is a deficient number, since it is larger than the sum of its proper divisors (31825672419).

51344536605 is a wasteful number, since it uses less digits than its factorization.

51344536605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130885.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 51344536605 in words is "fifty-one billion, three hundred forty-four million, five hundred thirty-six thousand, six hundred five".