51105984726 has 8 divisors (see below), whose sum is σ = 102211969464. Its totient is φ = 17035328240.

The previous prime is 51105984703. The next prime is 51105984733. The reversal of 51105984726 is 62748950115.

It is a happy number.

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

51105984726 is an admirable number.

It is a super-2 number, since 2×51105984726² (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, 4258832055 + ... + 4258832066.

It is an arithmetic number, because the mean of its divisors is an integer number (12776496183).

Almost surely, 2^51105984726 is an apocalyptic number.

51105984726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51105984726 is a wasteful number, since it uses less digits than its factorization.

51105984726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8517664126.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 51105984726 in words is "fifty-one billion, one hundred five million, nine hundred eighty-four thousand, seven hundred twenty-six".