51819264085 has 16 divisors (see below), whose sum is σ = 66030728256. Its totient is φ = 38904395008.

The previous prime is 51819264073. The next prime is 51819264103. The reversal of 51819264085 is 58046291815.

It is not a de Polignac number, because 51819264085 - 2¹¹ = 51819262037 is a prime.

It is a super-2 number, since 2×51819264085² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 848947 + ... + 907936.

It is an arithmetic number, because the mean of its divisors is an integer number (4126920516).

Almost surely, 2^51819264085 is an apocalyptic number.

It is an amenable number.

51819264085 is a deficient number, since it is larger than the sum of its proper divisors (14211464171).

51819264085 is a wasteful number, since it uses less digits than its factorization.

51819264085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757252.

The product of its (nonzero) digits is 691200, while the sum is 49.

The spelling of 51819264085 in words is "fifty-one billion, eight hundred nineteen million, two hundred sixty-four thousand, eighty-five".