51111072426 has 8 divisors (see below), whose sum is σ = 102222144864. Its totient is φ = 17037024140.

The previous prime is 51111072349. The next prime is 51111072437. The reversal of 51111072426 is 62427011115.

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

51111072426 is an admirable number.

It is a super-2 number, since 2×51111072426² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51111072393 and 51111072402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4259256030 + ... + 4259256041.

It is an arithmetic number, because the mean of its divisors is an integer number (12777768108).

Almost surely, 2^51111072426 is an apocalyptic number.

51111072426 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.

51111072426 is a wasteful number, since it uses less digits than its factorization.

51111072426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8518512076.

The product of its (nonzero) digits is 3360, while the sum is 30.

The spelling of 51111072426 in words is "fifty-one billion, one hundred eleven million, seventy-two thousand, four hundred twenty-six".