51172122447064 has 16 divisors (see below), whose sum is σ = 95947805539800. Its totient is φ = 25586040969792.

The previous prime is 51172122447037. The next prime is 51172122447157. The reversal of 51172122447064 is 46074422127115.

It is a super-2 number, since 2×51172122447064² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18015732 + ... + 20661820.

Almost surely, 2^{51172122447064} is an apocalyptic number.

It is an amenable number.

51172122447064 is a deficient number, since it is larger than the sum of its proper divisors (44775683092736).

51172122447064 is a wasteful number, since it uses less digits than its factorization.

51172122447064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063442 (or 5063438 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 46.

The spelling of 51172122447064 in words is "fifty-one trillion, one hundred seventy-two billion, one hundred twenty-two million, four hundred forty-seven thousand, sixty-four".