51984694605 has 8 divisors (see below), whose sum is σ = 83175511392. Its totient is φ = 27725170448.

The previous prime is 51984694549. The next prime is 51984694609. The reversal of 51984694605 is 50649648915.

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 51984694605 - 2¹⁵ = 51984661837 is a prime.

It is a super-2 number, since 2×51984694605² (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 (51984694609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732823139 + ... + 1732823168.

It is an arithmetic number, because the mean of its divisors is an integer number (10396938924).

Almost surely, 2^51984694605 is an apocalyptic number.

It is an amenable number.

51984694605 is a deficient number, since it is larger than the sum of its proper divisors (31190816787).

51984694605 is a wasteful number, since it uses less digits than its factorization.

51984694605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465646315.

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 51984694605 in words is "fifty-one billion, nine hundred eighty-four million, six hundred ninety-four thousand, six hundred five".