51166461513 has 8 divisors (see below), whose sum is σ = 68226696000. Its totient is φ = 34108600688.

The previous prime is 51166461439. The next prime is 51166461517. The reversal of 51166461513 is 31516466115.

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 51166461513 - 2¹⁰ = 51166460489 is a prime.

It is a super-2 number, since 2×51166461513² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51166461517) 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, 542493 + ... + 629786.

It is an arithmetic number, because the mean of its divisors is an integer number (8528337000).

Almost surely, 2^51166461513 is an apocalyptic number.

It is an amenable number.

51166461513 is a deficient number, since it is larger than the sum of its proper divisors (17060234487).

51166461513 is a wasteful number, since it uses less digits than its factorization.

51166461513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186831.

The product of its digits is 64800, while the sum is 39.

The spelling of 51166461513 in words is "fifty-one billion, one hundred sixty-six million, four hundred sixty-one thousand, five hundred thirteen".