51421323319 has 8 divisors (see below), whose sum is σ = 51626383200. Its totient is φ = 51216662016.

The previous prime is 51421323281. The next prime is 51421323337. The reversal of 51421323319 is 91332312415.

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 51421323319 - 2¹⁵ = 51421290551 is a prime.

It is a super-2 number, since 2×51421323319² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51421323119) 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, 160239 + ... + 358495.

It is an arithmetic number, because the mean of its divisors is an integer number (6453297900).

Almost surely, 2^51421323319 is an apocalyptic number.

51421323319 is a deficient number, since it is larger than the sum of its proper divisors (205059881).

51421323319 is a wasteful number, since it uses less digits than its factorization.

51421323319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199289.

The product of its digits is 19440, while the sum is 34.

The spelling of 51421323319 in words is "fifty-one billion, four hundred twenty-one million, three hundred twenty-three thousand, three hundred nineteen".