51243867019795 has 8 divisors (see below), whose sum is σ = 61493364147024. Its totient is φ = 40994611133664.

The previous prime is 51243867019777. The next prime is 51243867019841. The reversal of 51243867019795 is 59791076834215.

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 51243867019795 - 2⁹ = 51243867019283 is a prime.

It is a super-3 number, since 3×51243867019795³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51243867019795.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59842624 + ... + 60692893.

It is an arithmetic number, because the mean of its divisors is an integer number (7686670518378).

It is a 1-persistent number, because it is pandigital, but 2⋅51243867019795 = 102487734039590 is not.

Almost surely, 2^{51243867019795} is an apocalyptic number.

51243867019795 is a deficient number, since it is larger than the sum of its proper divisors (10249497127229).

51243867019795 is a wasteful number, since it uses less digits than its factorization.

51243867019795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120620549.

The product of its (nonzero) digits is 114307200, while the sum is 67.

The spelling of 51243867019795 in words is "fifty-one trillion, two hundred forty-three billion, eight hundred sixty-seven million, nineteen thousand, seven hundred ninety-five".