51340138888605 has 32 divisors (see below), whose sum is σ = 94618316734464. Its totient is φ = 23284976371776.

The previous prime is 51340138888601. The next prime is 51340138888697. The reversal of 51340138888605 is 50688883104315.

It is not a de Polignac number, because 51340138888605 - 2² = 51340138888601 is a prime.

It is a super-2 number, since 2×51340138888605² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51340138888601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1925001247 + ... + 1925027916.

It is an arithmetic number, because the mean of its divisors is an integer number (2956822397952).

Almost surely, 2^{51340138888605} is an apocalyptic number.

It is an amenable number.

51340138888605 is a deficient number, since it is larger than the sum of its proper divisors (43278177845859).

51340138888605 is a wasteful number, since it uses less digits than its factorization.

51340138888605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3850029305.

The product of its (nonzero) digits is 22118400, while the sum is 60.

The spelling of 51340138888605 in words is "fifty-one trillion, three hundred forty billion, one hundred thirty-eight million, eight hundred eighty-eight thousand, six hundred five".