51194964836 has 12 divisors (see below), whose sum is σ = 90597831660. Its totient is φ = 25309870080.

The previous prime is 51194964833. The next prime is 51194964869. The reversal of 51194964836 is 63846949115.

It can be written as a sum of positive squares in 2 ways, for example, as 16862580736 + 34332384100 = 129856^2 + 185290^2 .

It is not an unprimeable number, because it can be changed into a prime (51194964833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71902685 + ... + 71903396.

It is an arithmetic number, because the mean of its divisors is an integer number (7549819305).

Almost surely, 2^51194964836 is an apocalyptic number.

It is an amenable number.

51194964836 is a deficient number, since it is larger than the sum of its proper divisors (39402866824).

51194964836 is a wasteful number, since it uses less digits than its factorization.

51194964836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143806174 (or 143806172 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 56.

The spelling of 51194964836 in words is "fifty-one billion, one hundred ninety-four million, nine hundred sixty-four thousand, eight hundred thirty-six".