51663251419 has 16 divisors (see below), whose sum is σ = 56640276000. Its totient is φ = 46836700416.

The previous prime is 51663251417. The next prime is 51663251449. The reversal of 51663251419 is 91415236615.

It is a cyclic number.

It is not a de Polignac number, because 51663251419 - 2¹ = 51663251417 is a prime.

It is a super-2 number, since 2×51663251419² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51663251417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22552 + ... + 322234.

It is an arithmetic number, because the mean of its divisors is an integer number (3540017250).

Almost surely, 2^51663251419 is an apocalyptic number.

51663251419 is a deficient number, since it is larger than the sum of its proper divisors (4977024581).

51663251419 is a wasteful number, since it uses less digits than its factorization.

51663251419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299934.

The product of its digits is 194400, while the sum is 43.

The spelling of 51663251419 in words is "fifty-one billion, six hundred sixty-three million, two hundred fifty-one thousand, four hundred nineteen".