51492839709 has 8 divisors (see below), whose sum is σ = 68658184800. Its totient is φ = 34328027216.

The previous prime is 51492839677. The next prime is 51492839719. The reversal of 51492839709 is 90793829415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51492839709 - 2⁵ = 51492839677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51492839719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249742 + ... + 406640.

It is an arithmetic number, because the mean of its divisors is an integer number (8582273100).

Almost surely, 2^51492839709 is an apocalyptic number.

It is an amenable number.

51492839709 is a deficient number, since it is larger than the sum of its proper divisors (17165345091).

51492839709 is a wasteful number, since it uses less digits than its factorization.

51492839709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266299.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 51492839709 in words is "fifty-one billion, four hundred ninety-two million, eight hundred thirty-nine thousand, seven hundred nine".