51848718518 has 8 divisors (see below), whose sum is σ = 81866397720. Its totient is φ = 24559919280.

The previous prime is 51848718497. The next prime is 51848718527. The reversal of 51848718518 is 81581784815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51848718518² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682219943 + ... + 682220018.

It is an arithmetic number, because the mean of its divisors is an integer number (10233299715).

Almost surely, 2^51848718518 is an apocalyptic number.

51848718518 is a deficient number, since it is larger than the sum of its proper divisors (30017679202).

51848718518 is a wasteful number, since it uses less digits than its factorization.

51848718518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364439982.

The product of its digits is 2867200, while the sum is 56.

The spelling of 51848718518 in words is "fifty-one billion, eight hundred forty-eight million, seven hundred eighteen thousand, five hundred eighteen".