51930914369 has 16 divisors (see below), whose sum is σ = 54677519424. Its totient is φ = 49273224000.

The previous prime is 51930914333. The next prime is 51930914377. The reversal of 51930914369 is 96341903915.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51930914369 is a prime.

It is a super-2 number, since 2×51930914369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51930914069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117374 + ... + 342984.

It is an arithmetic number, because the mean of its divisors is an integer number (3417344964).

Almost surely, 2^51930914369 is an apocalyptic number.

It is an amenable number.

51930914369 is a deficient number, since it is larger than the sum of its proper divisors (2746605055).

51930914369 is a wasteful number, since it uses less digits than its factorization.

51930914369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225808.

The product of its (nonzero) digits is 787320, while the sum is 50.

The spelling of 51930914369 in words is "fifty-one billion, nine hundred thirty million, nine hundred fourteen thousand, three hundred sixty-nine".