51918643743 has 8 divisors (see below), whose sum is σ = 72868272000. Its totient is φ = 32790722328.

The previous prime is 51918643697. The next prime is 51918643757. The reversal of 51918643743 is 34734681915.

51918643743 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 not a de Polignac number, because 51918643743 - 2⁸ = 51918643487 is a prime.

It is a super-2 number, since 2×51918643743² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51918647743) 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, 455426643 + ... + 455426756.

It is an arithmetic number, because the mean of its divisors is an integer number (9108534000).

Almost surely, 2^51918643743 is an apocalyptic number.

51918643743 is a deficient number, since it is larger than the sum of its proper divisors (20949628257).

51918643743 is a wasteful number, since it uses less digits than its factorization.

51918643743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910853421.

The product of its digits is 2177280, while the sum is 51.

The spelling of 51918643743 in words is "fifty-one billion, nine hundred eighteen million, six hundred forty-three thousand, seven hundred forty-three".