51704265669 has 16 divisors (see below), whose sum is σ = 80619720192. Its totient is φ = 28858194288.

The previous prime is 51704265661. The next prime is 51704265671. The reversal of 51704265669 is 96656240715.

It is not a de Polignac number, because 51704265669 - 2³ = 51704265661 is a prime.

It is a super-2 number, since 2×51704265669² (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 (51704265661) 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, 28628259 + ... + 28630064.

It is an arithmetic number, because the mean of its divisors is an integer number (5038732512).

Almost surely, 2^51704265669 is an apocalyptic number.

It is an amenable number.

51704265669 is a deficient number, since it is larger than the sum of its proper divisors (28915454523).

51704265669 is a wasteful number, since it uses less digits than its factorization.

51704265669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57258376.

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 51704265669 in words is "fifty-one billion, seven hundred four million, two hundred sixty-five thousand, six hundred sixty-nine".