51916866419 has 8 divisors (see below), whose sum is σ = 57220465008. Its totient is φ = 46710581760.

The previous prime is 51916866383. The next prime is 51916866427. The reversal of 51916866419 is 91466861915.

51916866419 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51916866419 - 2²⁴ = 51900089203 is a prime.

It is a super-2 number, since 2×51916866419² (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 (51916866119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24327362 + ... + 24329495.

It is an arithmetic number, because the mean of its divisors is an integer number (7152558126).

Almost surely, 2^51916866419 is an apocalyptic number.

51916866419 is a deficient number, since it is larger than the sum of its proper divisors (5303598589).

51916866419 is a wasteful number, since it uses less digits than its factorization.

51916866419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48656965.

The product of its digits is 2799360, while the sum is 56.

The spelling of 51916866419 in words is "fifty-one billion, nine hundred sixteen million, eight hundred sixty-six thousand, four hundred nineteen".